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A direct induced currentDirect current Direct current (Elec.)
(a) A current flowing in one direction only; -- distinguished
from alternating current. When steady and not pulsating
a direct current is often called a continuous current.
(b)
A direct induced current, or momentary current of the same
direction as the inducing current, produced by stopping or
removing the latter; also, a similar current produced by
removal of a magnet. A inaurisWattlebird Wat"tle*bird`, n.
1. (Zo["o]l.) Any one of several species of honey eaters
belonging to Anthoch[ae]ra and allied genera of the
family Meliphagid[ae]. These birds usually have a large
and conspicuous wattle of naked skin hanging down below
each ear. They are natives of Australia and adjacent
islands.
Note: The best-known species (Anthoch[ae]ra carunculata)
has the upper parts grayish brown, with a white stripe
on each feather, and the wing and tail quills dark
brown or blackish, tipped with withe. Its wattles, in
life, are light blood-red. Called also wattled crow,
wattled bee-eater, wattled honey eater. Another
species (A. inauris) is streaked with black, gray,
and white, and its long wattles are white, tipped with
orange. The bush wattlebirds, belonging to the genus
Anellobia, are closely related, but lack conspicuous
wattles. The most common species (A. mellivora) is
dark brown, finely streaked with white. Called also
goruck creeper.
2. (Zo["o]l.) The Australian brush turkey. A incisaGuttatrap Gut"ta*trap, n.
The inspissated juice of a tree of the genus Artocarpus
(A. incisa, or breadfruit tree), sometimes used in making
birdlime, on account of its glutinous quality. A pig in a pokePig Pig, n. [Cf. D. big, bigge, LG. bigge, also Dan. pige
girl, Sw. piga, Icel. p[=i]ka.]
1. The young of swine, male or female; also, any swine; a
hog. ``Two pigges in a poke.' --Chaucer.
2. (Zo["o]l.) Any wild species of the genus Sus and related
genera.
3. [Cf. Sow a channel for melted iron.] An oblong mass of
cast iron, lead, or other metal. See Mine pig, under
Mine.
4. One who is hoggish; a greedy person. [Low]
Masked pig. (Zo["o]l.) See under Masked.
Pig bed (Founding), the bed of sand in which the iron from
a smelting furnace is cast into pigs.
Pig iron, cast iron in pigs, or oblong blocks or bars, as
it comes from the smelting furnace. See Pig, 4.
Pig yoke (Naut.), a nickname for a quadrant or sextant.
A pig in a poke (that is, bag), a blind bargain; something
bought or bargained for, without the quality or the value
being known. [Colloq.] acropetal botryose centripetal indefinite inflorescenceIndeterminate In`de*ter"mi*nate, a. [L. indeterminatus.]
Not determinate; not certain or fixed; indefinite; not
precise; as, an indeterminate number of years. --Paley.
Indeterminate analysis (Math.), that branch of analysis
which has for its object the solution of indeterminate
problems.
Indeterminate coefficients (Math.), coefficients
arbitrarily assumed for convenience of calculation, or to
facilitate some artifice of analysis. Their values are
subsequently determined.
Indeterminate equation (Math.), an equation in which the
unknown quantities admit of an infinite number of values,
or sets of values. A group of equations is indeterminate
when it contains more unknown quantities than there are
equations.
Indeterminate inflorescence (Bot.), a mode of inflorescence
in which the flowers all arise from axillary buds, the
terminal bud going on to grow and sometimes continuing the
stem indefinitely; -- called also acropetal, botryose,
centripetal, & indefinite inflorescence. --Gray.
Indeterminate problem (Math.), a problem which admits of an
infinite number of solutions, or one in which there are
fewer imposed conditions than there are unknown or
required results.
Indeterminate quantity (Math.), a quantity which has no
fixed value, but which may be varied in accordance with
any proposed condition.
Indeterminate series (Math.), a series whose terms proceed
by the powers of an indeterminate quantity, sometimes also
with indeterminate exponents, or indeterminate
coefficients. -- In`de*ter"mi*nate*ly adv. --
In`de*ter"mi*nate*ness, n. Ad infinitum
Ad infinitum Ad in`fi*ni"tum [L., to infinity.]
Without limit; endlessly.
Ad interim
Ad interim Ad in"ter*im[L.]
Meanwhile; temporary.
Advowson in grossGross Gross, n. [F. gros (in sense 1), grosse (in sense 2).
See Gross, a.]
1. The main body; the chief part, bulk, or mass. ``The gross
of the enemy.' --Addison.
For the gross of the people, they are considered as
a mere herd of cattle. --Burke.
2. sing. & pl. The number of twelve dozen; twelve times
twelve; as, a gross of bottles; ten gross of pens.
Advowson in gross (Law), an advowson belonging to a person,
and not to a manor.
A great gross, twelve gross; one hundred and forty-four
dozen.
By the gross, by the quantity; at wholesale.
Common in gross. (Law) See under Common, n.
In the gross, In gross, in the bulk, or the undivided
whole; all parts taken together. Age of invertebratesInvertebrate In*ver"te*brate, a. (Zo["o]l.)
Destitute of a backbone; having no vertebr[ae]; of or
pertaining to the Invertebrata. -- n. One of the
Invertebrata.
Age of invertebrates. See Age, and Silurian. All in allAll All, n.
The whole number, quantity, or amount; the entire thing;
everything included or concerned; the aggregate; the whole;
totality; everything or every person; as, our all is at
stake.
Death, as the Psalmist saith, is certain to all.
--Shak.
All that thou seest is mine. --Gen. xxxi.
43.
Note: All is used with of, like a partitive; as, all of a
thing, all of us.
After all, after considering everything to the contrary;
nevertheless.
All in all, a phrase which signifies all things to a
person, or everything desired; (also adverbially) wholly;
altogether.
Thou shalt be all in all, and I in thee, Forever.
--Milton.
Trust me not at all, or all in all. --Tennyson.
All in the wind (Naut.), a phrase denoting that the sails
are parallel with the course of the wind, so as to shake.
All told, all counted; in all.
And all, and the rest; and everything connected. ``Bring
our crown and all.' --Shak.
At all.
(a) In every respect; wholly; thoroughly. [Obs.] ``She is a
shrew at al(l).' --Chaucer.
(b) A phrase much used by way of enforcement or emphasis,
usually in negative or interrogative sentences, and
signifying in any way or respect; in the least degree or
to the least extent; in the least; under any
circumstances; as, he has no ambition at all; has he any
property at all? ``Nothing at all.' --Shak. ``If thy
father at all miss me.' --1 Sam. xx. 6.
Over all, everywhere. [Obs.] --Chaucer.
Note: All is much used in composition to enlarge the meaning,
or add force to a word. In some instances, it is
completely incorporated into words, and its final
consonant is dropped, as in almighty, already, always:
but, in most instances, it is an adverb prefixed to
adjectives or participles, but usually with a hyphen,
as, all-bountiful, all-glorious, allimportant,
all-surrounding, etc. In others it is an adjective; as,
allpower, all-giver. Anciently many words, as, alabout,
alaground, etc., were compounded with all, which are
now written separately. All in the windAll All, n.
The whole number, quantity, or amount; the entire thing;
everything included or concerned; the aggregate; the whole;
totality; everything or every person; as, our all is at
stake.
Death, as the Psalmist saith, is certain to all.
--Shak.
All that thou seest is mine. --Gen. xxxi.
43.
Note: All is used with of, like a partitive; as, all of a
thing, all of us.
After all, after considering everything to the contrary;
nevertheless.
All in all, a phrase which signifies all things to a
person, or everything desired; (also adverbially) wholly;
altogether.
Thou shalt be all in all, and I in thee, Forever.
--Milton.
Trust me not at all, or all in all. --Tennyson.
All in the wind (Naut.), a phrase denoting that the sails
are parallel with the course of the wind, so as to shake.
All told, all counted; in all.
And all, and the rest; and everything connected. ``Bring
our crown and all.' --Shak.
At all.
(a) In every respect; wholly; thoroughly. [Obs.] ``She is a
shrew at al(l).' --Chaucer.
(b) A phrase much used by way of enforcement or emphasis,
usually in negative or interrogative sentences, and
signifying in any way or respect; in the least degree or
to the least extent; in the least; under any
circumstances; as, he has no ambition at all; has he any
property at all? ``Nothing at all.' --Shak. ``If thy
father at all miss me.' --1 Sam. xx. 6.
Over all, everywhere. [Obs.] --Chaucer.
Note: All is much used in composition to enlarge the meaning,
or add force to a word. In some instances, it is
completely incorporated into words, and its final
consonant is dropped, as in almighty, already, always:
but, in most instances, it is an adverb prefixed to
adjectives or participles, but usually with a hyphen,
as, all-bountiful, all-glorious, allimportant,
all-surrounding, etc. In others it is an adjective; as,
allpower, all-giver. Anciently many words, as, alabout,
alaground, etc., were compounded with all, which are
now written separately. alveolar indexGnathic Gnath"ic, a. [Gr. ? the jaw.] (Anat.)
Of or pertaining to the jaw.
Gnathic index, in a skull, the ratio of the distance from
the middle of the nasofrontal suture to the basion (taken
equal to 100), to the distance from the basion to the
middle of the front edge of the upper jaw; -- called also
alveolar index.
Skulls with the gnathic index below 98 are
orthognathous, from 98 to 103 mesognathous, and
above 103 are prognathous. --Flower. Andira inermisPartridge Par"tridge, n. [OE. partriche, pertriche, OF.
pertris, perdriz, F. perdrix, L. perdix, -icis, fr. Gr. ?.]
(Zo["o]l.)
1. Any one of numerous species of small gallinaceous birds of
the genus Perdix and several related genera of the
family Perdicid[ae], of the Old World. The partridge is
noted as a game bird.
Full many a fat partrich had he in mew. --Chaucer.
Note: The common European, or gray, partridge (Perdix
cinerea) and the red-legged partridge (Caccabis
rubra) of Southern Europe and Asia are well-known
species.
2. Any one of several species of quail-like birds belonging
to Colinus, and allied genera. [U.S.]
Note: Among them are the bobwhite (Colinus Virginianus) of
the Eastern States; the plumed, or mountain, partridge
(Oreortyx pictus) of California; the Massena
partridge (Cyrtonyx Montezum[ae]); and the California
partridge (Callipepla Californica).
3. The ruffed grouse (Bonasa umbellus). [New Eng.]
Bamboo partridge (Zo["o]l.), a spurred partridge of the
genus Bambusicola. Several species are found in China
and the East Indies.
Night partridge (Zo["o]l.), the woodcock. [Local, U.S.]
Painted partridge (Zo["o]l.), a francolin of South Africa
(Francolinus pictus).
Partridge berry. (Bot.)
(a) The scarlet berry of a trailing american plant
(Mitchella repens) of the order Rubiace[ae],
having roundish evergreen leaves, and white fragrant
flowers sometimes tinged with purple, growing in pairs
with the ovaries united, and producing the berries
which remain over winter; also, the plant itself.
(b) The fruit of the creeping wintergreen (Gaultheria
procumbens); also, the plant itself.
Partridge dove (Zo["o]l.) Same as Mountain witch, under
Mountain.
Partridge pea (Bot.), a yellow-flowered leguminous herb
(Cassia Cham[ae]crista), common in sandy fields in the
Eastern United States.
Partridge shell (Zo["o]l.), a large marine univalve shell
(Dolium perdix), having colors variegated like those of
the partridge.
Partridge wood
(a) A variegated wood, much esteemed for cabinetwork. It
is obtained from tropical America, and one source of
it is said to be the leguminous tree Andira inermis.
Called also pheasant wood.
(b) A name sometimes given to the dark-colored and
striated wood of some kind of palm, which is used for
walking sticks and umbrella handles.
Sea partridge (Zo["o]l.), an Asiatic sand partridge
(Ammoperdix Bonhami); -- so called from its note.
Snow partridge (Zo["o]l.), a large spurred partridge
(Lerwa nivicola) which inhabits the high mountains of
Asia.
Spruce partridge. See under Spruce.
Wood partridge, or Hill partridge (Zo["o]l.), any small
Asiatic partridge of the genus Arboricola. Angle of incidence
Angle of incidence Angle of incidence (A["e]ronautics)
The angle between the chord of an a["e]rocurve and the
relative direction of the undisturbed air current.
Angle of incidenceIncidence In"ci*dence, n. [Cf. F. incidence.]
1. A falling on or upon; an incident; an event. [Obs.] --Bp.
Hall.
2. (Physics) The direction in which a body, or a ray of light
or heat, falls on any surface.
In equal incidences there is a considerable
inequality of refractions. --Sir I.
Newton.
Angle of incidence, the angle which a ray of light, or the
line of incidence of a body, falling on any surface, makes
with a perpendicular to that surface; also formerly, the
complement of this angle.
Line of incidence, the line in the direction of which a
surface is struck by a body, ray of light, and the like. Aphrophora interruptaHop Hop, n. [OE. hoppe; akin to D. hop, hoppe, OHG. hopfo, G.
hopfen; cf. LL. hupa, W. hopez, Armor. houpez, and Icel.
humall, SW. & Dan. humle.]
1. (Bot.) A climbing plant (Humulus Lupulus), having a
long, twining, annual stalk. It is cultivated for its
fruit (hops).
2. The catkin or strobilaceous fruit of the hop, much used in
brewing to give a bitter taste.
3. The fruit of the dog-rose. See Hip.
Hop back. (Brewing) See under 1st Back.
Hop clover (Bot.), a species of yellow clover having heads
like hops in miniature (Trifolium agrarium, and T.
procumbens).
Hop flea (Zo["o]l.), a small flea beetle (Haltica
concinna), very injurious to hops.
Hop fly (Zo["o]l.), an aphid (Phorodon humuli), very
injurious to hop vines.
Hop froth fly (Zo["o]l.), an hemipterous insect
(Aphrophora interrupta), allied to the cockoo spits. It
often does great damage to hop vines.
Hop hornbeam (Bot.), an American tree of the genus Ostrya
(O. Virginica) the American ironwood; also, a European
species (O. vulgaris).
Hop moth (Zo["o]l.), a moth (Hypena humuli), which in the
larval state is very injurious to hop vines.
Hop picker, one who picks hops.
Hop pole, a pole used to support hop vines.
Hop tree (Bot.), a small American tree (Ptelia
trifoliata), having broad, flattened fruit in large
clusters, sometimes used as a substitute for hops.
Hop vine (Bot.), the climbing vine or stalk of the hop. Artocarpus incisaBreadfruit Bread"fruit`, n. (Bot.)
1. The fruit of a tree (Artocarpus incisa) found in the
islands of the Pacific, esp. the South Sea islands. It is
of a roundish form, from four to six or seven inches in
diameter, and, when baked, somewhat resembles bread, and
is eaten as food, whence the name.
2. (Bot.) The tree itself, which is one of considerable size,
with large, lobed leaves. Cloth is made from the bark, and
the timber is used for many purposes. Called also
breadfruit tree and bread tree. Artocarpus integrifoliaJack Jack (j[a^]k), n. [Pg. jaca, Malayalam, tsjaka.] (Bot.)
A large tree, the Artocarpus integrifolia, common in the
East Indies, closely allied to the breadfruit, from which it
differs in having its leaves entire. The fruit is of great
size, weighing from thirty to forty pounds, and through its
soft fibrous matter are scattered the seeds, which are
roasted and eaten. The wood is of a yellow color, fine grain,
and rather heavy, and is much used in cabinetwork. It is also
used for dyeing a brilliant yellow. [Written also jak.] Asiatic or Indian civetZibet ib"et, Zibeth ib"eth, n. [Cf. It. zibetto. See
Civet.] (Zo["o]l.)
A carnivorous mammal (Viverra zibetha) closely allied to
the civet, from which it differs in having the spots on the
body less distinct, the throat whiter, and the black rings on
the tail more numerous.
Note: It inhabits India, Southern China, and the East Indies.
It yields a perfume similar to that of the civet. It is
often domesticated by the natives, and then serves the
same purposes as the domestic cat. Called also
Asiatic, or Indian, civet. Axes of coordinates in a planeAxis Ax"is, n.; pl. Axes. [L. axis axis, axle. See Axle.]
A straight line, real or imaginary, passing through a body,
on which it revolves, or may be supposed to revolve; a line
passing through a body or system around which the parts are
symmetrically arranged.
2. (Math.) A straight line with respect to which the
different parts of a magnitude are symmetrically arranged;
as, the axis of a cylinder, i. e., the axis of a cone,
that is, the straight line joining the vertex and the
center of the base; the axis of a circle, any straight
line passing through the center.
3. (Bot.) The stem; the central part, or longitudinal
support, on which organs or parts are arranged; the
central line of any body. --Gray.
4. (Anat.)
(a) The second vertebra of the neck, or vertebra
dentata.
(b) Also used of the body only of the vertebra, which is
prolonged anteriorly within the foramen of the first
vertebra or atlas, so as to form the odontoid process
or peg which serves as a pivot for the atlas and head
to turn upon.
5. (Crystallog.) One of several imaginary lines, assumed in
describing the position of the planes by which a crystal
is bounded.
6. (Fine Arts) The primary or secondary central line of any
design.
Anticlinal axis (Geol.), a line or ridge from which the
strata slope downward on the two opposite sides.
Synclinal axis, a line from which the strata slope upward
in opposite directions, so as to form a valley.
Axis cylinder (Anat.), the neuraxis or essential, central
substance of a nerve fiber; -- called also axis band,
axial fiber, and cylinder axis.
Axis in peritrochio, the wheel and axle, one of the
mechanical powers.
Axis of a curve (Geom.), a straight line which bisects a
system of parallel chords of a curve; called a principal
axis, when cutting them at right angles, in which case it
divides the curve into two symmetrical portions, as in the
parabola, which has one such axis, the ellipse, which has
two, or the circle, which has an infinite number. The two
axes of the ellipse are the major axis and the minor
axis, and the two axes of the hyperbola are the
transverse axis and the conjugate axis.
Axis of a lens, the straight line passing through its
center and perpendicular to its surfaces.
Axis of a telescope or microscope, the straight line with
which coincide the axes of the several lenses which
compose it.
Axes of co["o]rdinates in a plane, two straight lines
intersecting each other, to which points are referred for
the purpose of determining their relative position: they
are either rectangular or oblique.
Axes of co["o]rdinates in space, the three straight lines
in which the co["o]rdinate planes intersect each other.
Axis of a balance, that line about which it turns.
Axis of oscillation, of a pendulum, a right line passing
through the center about which it vibrates, and
perpendicular to the plane of vibration.
Axis of polarization, the central line around which the
prismatic rings or curves are arranged. --Brewster.
Axis of revolution (Descriptive Geom.), a straight line
about which some line or plane is revolved, so that the
several points of the line or plane shall describe circles
with their centers in the fixed line, and their planes
perpendicular to it, the line describing a surface of
revolution, and the plane a solid of revolution.
Axis of symmetry (Geom.), any line in a plane figure which
divides the figure into two such parts that one part, when
folded over along the axis, shall coincide with the other
part.
Axis of the equator, ecliptic, horizon (or other circle
considered with reference to the sphere on which it lies),
the diameter of the sphere which is perpendicular to the
plane of the circle. --Hutton.
Axis of the Ionic capital (Arch.), a line passing
perpendicularly through the middle of the eye of the
volute.
Neutral axis (Mech.), the line of demarcation between the
horizontal elastic forces of tension and compression,
exerted by the fibers in any cross section of a girder.
Optic axis of a crystal, the direction in which a ray of
transmitted light suffers no double refraction. All
crystals, not of the isometric system, are either uniaxial
or biaxial.
Optic axis, Visual axis (Opt.), the straight line passing
through the center of the pupil, and perpendicular to the
surface of the eye.
Radical axis of two circles (Geom.), the straight line
perpendicular to the line joining their centers and such
that the tangents from any point of it to the two circles
shall be equal to each other.
Spiral axis (Arch.), the axis of a twisted column drawn
spirally in order to trace the circumvolutions without.
Axis of abscissas and Axis of ordinates. See Abscissa. Axes of coordinates in spaceAxis Ax"is, n.; pl. Axes. [L. axis axis, axle. See Axle.]
A straight line, real or imaginary, passing through a body,
on which it revolves, or may be supposed to revolve; a line
passing through a body or system around which the parts are
symmetrically arranged.
2. (Math.) A straight line with respect to which the
different parts of a magnitude are symmetrically arranged;
as, the axis of a cylinder, i. e., the axis of a cone,
that is, the straight line joining the vertex and the
center of the base; the axis of a circle, any straight
line passing through the center.
3. (Bot.) The stem; the central part, or longitudinal
support, on which organs or parts are arranged; the
central line of any body. --Gray.
4. (Anat.)
(a) The second vertebra of the neck, or vertebra
dentata.
(b) Also used of the body only of the vertebra, which is
prolonged anteriorly within the foramen of the first
vertebra or atlas, so as to form the odontoid process
or peg which serves as a pivot for the atlas and head
to turn upon.
5. (Crystallog.) One of several imaginary lines, assumed in
describing the position of the planes by which a crystal
is bounded.
6. (Fine Arts) The primary or secondary central line of any
design.
Anticlinal axis (Geol.), a line or ridge from which the
strata slope downward on the two opposite sides.
Synclinal axis, a line from which the strata slope upward
in opposite directions, so as to form a valley.
Axis cylinder (Anat.), the neuraxis or essential, central
substance of a nerve fiber; -- called also axis band,
axial fiber, and cylinder axis.
Axis in peritrochio, the wheel and axle, one of the
mechanical powers.
Axis of a curve (Geom.), a straight line which bisects a
system of parallel chords of a curve; called a principal
axis, when cutting them at right angles, in which case it
divides the curve into two symmetrical portions, as in the
parabola, which has one such axis, the ellipse, which has
two, or the circle, which has an infinite number. The two
axes of the ellipse are the major axis and the minor
axis, and the two axes of the hyperbola are the
transverse axis and the conjugate axis.
Axis of a lens, the straight line passing through its
center and perpendicular to its surfaces.
Axis of a telescope or microscope, the straight line with
which coincide the axes of the several lenses which
compose it.
Axes of co["o]rdinates in a plane, two straight lines
intersecting each other, to which points are referred for
the purpose of determining their relative position: they
are either rectangular or oblique.
Axes of co["o]rdinates in space, the three straight lines
in which the co["o]rdinate planes intersect each other.
Axis of a balance, that line about which it turns.
Axis of oscillation, of a pendulum, a right line passing
through the center about which it vibrates, and
perpendicular to the plane of vibration.
Axis of polarization, the central line around which the
prismatic rings or curves are arranged. --Brewster.
Axis of revolution (Descriptive Geom.), a straight line
about which some line or plane is revolved, so that the
several points of the line or plane shall describe circles
with their centers in the fixed line, and their planes
perpendicular to it, the line describing a surface of
revolution, and the plane a solid of revolution.
Axis of symmetry (Geom.), any line in a plane figure which
divides the figure into two such parts that one part, when
folded over along the axis, shall coincide with the other
part.
Axis of the equator, ecliptic, horizon (or other circle
considered with reference to the sphere on which it lies),
the diameter of the sphere which is perpendicular to the
plane of the circle. --Hutton.
Axis of the Ionic capital (Arch.), a line passing
perpendicularly through the middle of the eye of the
volute.
Neutral axis (Mech.), the line of demarcation between the
horizontal elastic forces of tension and compression,
exerted by the fibers in any cross section of a girder.
Optic axis of a crystal, the direction in which a ray of
transmitted light suffers no double refraction. All
crystals, not of the isometric system, are either uniaxial
or biaxial.
Optic axis, Visual axis (Opt.), the straight line passing
through the center of the pupil, and perpendicular to the
surface of the eye.
Radical axis of two circles (Geom.), the straight line
perpendicular to the line joining their centers and such
that the tangents from any point of it to the two circles
shall be equal to each other.
Spiral axis (Arch.), the axis of a twisted column drawn
spirally in order to trace the circumvolutions without.
Axis of abscissas and Axis of ordinates. See Abscissa. Axis in peritrochioAxis Ax"is, n.; pl. Axes. [L. axis axis, axle. See Axle.]
A straight line, real or imaginary, passing through a body,
on which it revolves, or may be supposed to revolve; a line
passing through a body or system around which the parts are
symmetrically arranged.
2. (Math.) A straight line with respect to which the
different parts of a magnitude are symmetrically arranged;
as, the axis of a cylinder, i. e., the axis of a cone,
that is, the straight line joining the vertex and the
center of the base; the axis of a circle, any straight
line passing through the center.
3. (Bot.) The stem; the central part, or longitudinal
support, on which organs or parts are arranged; the
central line of any body. --Gray.
4. (Anat.)
(a) The second vertebra of the neck, or vertebra
dentata.
(b) Also used of the body only of the vertebra, which is
prolonged anteriorly within the foramen of the first
vertebra or atlas, so as to form the odontoid process
or peg which serves as a pivot for the atlas and head
to turn upon.
5. (Crystallog.) One of several imaginary lines, assumed in
describing the position of the planes by which a crystal
is bounded.
6. (Fine Arts) The primary or secondary central line of any
design.
Anticlinal axis (Geol.), a line or ridge from which the
strata slope downward on the two opposite sides.
Synclinal axis, a line from which the strata slope upward
in opposite directions, so as to form a valley.
Axis cylinder (Anat.), the neuraxis or essential, central
substance of a nerve fiber; -- called also axis band,
axial fiber, and cylinder axis.
Axis in peritrochio, the wheel and axle, one of the
mechanical powers.
Axis of a curve (Geom.), a straight line which bisects a
system of parallel chords of a curve; called a principal
axis, when cutting them at right angles, in which case it
divides the curve into two symmetrical portions, as in the
parabola, which has one such axis, the ellipse, which has
two, or the circle, which has an infinite number. The two
axes of the ellipse are the major axis and the minor
axis, and the two axes of the hyperbola are the
transverse axis and the conjugate axis.
Axis of a lens, the straight line passing through its
center and perpendicular to its surfaces.
Axis of a telescope or microscope, the straight line with
which coincide the axes of the several lenses which
compose it.
Axes of co["o]rdinates in a plane, two straight lines
intersecting each other, to which points are referred for
the purpose of determining their relative position: they
are either rectangular or oblique.
Axes of co["o]rdinates in space, the three straight lines
in which the co["o]rdinate planes intersect each other.
Axis of a balance, that line about which it turns.
Axis of oscillation, of a pendulum, a right line passing
through the center about which it vibrates, and
perpendicular to the plane of vibration.
Axis of polarization, the central line around which the
prismatic rings or curves are arranged. --Brewster.
Axis of revolution (Descriptive Geom.), a straight line
about which some line or plane is revolved, so that the
several points of the line or plane shall describe circles
with their centers in the fixed line, and their planes
perpendicular to it, the line describing a surface of
revolution, and the plane a solid of revolution.
Axis of symmetry (Geom.), any line in a plane figure which
divides the figure into two such parts that one part, when
folded over along the axis, shall coincide with the other
part.
Axis of the equator, ecliptic, horizon (or other circle
considered with reference to the sphere on which it lies),
the diameter of the sphere which is perpendicular to the
plane of the circle. --Hutton.
Axis of the Ionic capital (Arch.), a line passing
perpendicularly through the middle of the eye of the
volute.
Neutral axis (Mech.), the line of demarcation between the
horizontal elastic forces of tension and compression,
exerted by the fibers in any cross section of a girder.
Optic axis of a crystal, the direction in which a ray of
transmitted light suffers no double refraction. All
crystals, not of the isometric system, are either uniaxial
or biaxial.
Optic axis, Visual axis (Opt.), the straight line passing
through the center of the pupil, and perpendicular to the
surface of the eye.
Radical axis of two circles (Geom.), the straight line
perpendicular to the line joining their centers and such
that the tangents from any point of it to the two circles
shall be equal to each other.
Spiral axis (Arch.), the axis of a twisted column drawn
spirally in order to trace the circumvolutions without.
Axis of abscissas and Axis of ordinates. See Abscissa. Bill of indictmentIndictment In*dict"ment, n. [Cf. Inditement.]
1. The act of indicting, or the state of being indicted.
2. (Law) The formal statement of an offense, as framed by the
prosecuting authority of the State, and found by the grand
jury.
Note: To the validity of an indictment a finding by the grand
jury is essential, while an information rests only on
presentation by the prosecuting authority.
3. An accusation in general; a formal accusation.
Bill of indictment. See under Bill. Biting inBiting in Bit"ing in" (Etching.)
The process of corroding or eating into metallic plates, by
means of an acid. See Etch. --G. Francis. Blank indorsementIndorsement In*dorse"ment, n. [From Indorse; cf.
Endorsement.] [Written also endorsement.]
1. The act of writing on the back of a note, bill, or other
written instrument.
2. That which is written on the back of a note, bill, or
other paper, as a name, an order for, or a receipt of,
payment, or the return of an officer, etc.; a writing,
usually upon the back, but sometimes on the face, of a
negotiable instrument, by which the property therein is
assigned and transferred. --Story. Byles. Burrill.
3. Sanction, support, or approval; as, the indorsement of a
rumor, an opinion, a course, conduct.
Blank indorsement. See under Blank. Blank indorsementBlank Blank, a. [OE. blank, blonc, blaunc, blaunche, fr. F.
blanc, fem. blanche, fr. OHG. blanch shining, bright, white,
G. blank; akin to E. blink, cf. also AS. blanc white. ?98.
See Blink, and cf. 1st Blanch.]
1. Of a white or pale color; without color.
To the blank moon Her office they prescribed.
--Milton.
2. Free from writing, printing, or marks; having an empty
space to be filled in with some special writing; -- said
of checks, official documents, etc.; as, blank paper; a
blank check; a blank ballot.
3. Utterly confounded or discomfited.
Adam . . . astonied stood, and blank. --Milton.
4. Empty; void; without result; fruitless; as, a blank space;
a blank day.
5. Lacking characteristics which give variety; as, a blank
desert; a blank wall; destitute of interests, affections,
hopes, etc.; as, to live a blank existence; destitute of
sensations; as, blank unconsciousness.
6. Lacking animation and intelligence, or their associated
characteristics, as expression of face, look, etc.;
expressionless; vacant. ``Blank and horror-stricken
faces.' --C. Kingsley.
The blank . . . glance of a half returned
consciousness. --G. Eliot.
7. Absolute; downright; unmixed; as, blank terror.
Blank bar (Law), a plea put in to oblige the plaintiff in
an action of trespass to assign the certain place where
the trespass was committed; -- called also common bar.
Blank cartridge, a cartridge containing no ball.
Blank deed. See Deed.
Blank door, or Blank window (Arch.), a depression in a
wall of the size of a door or window, either for
symmetrical effect, or for the more convenient insertion
of a door or window at a future time, should it be needed.
Blank indorsement (Law), an indorsement which omits the
name of the person in whose favor it is made; it is
usually made by simply writing the name of the indorser on
the back of the bill.
Blank line (Print.), a vacant space of the breadth of a
line, on a printed page; a line of quadrats.
Blank tire (Mech.), a tire without a flange.
Blank tooling. See Blind tooling, under Blind.
Blank verse. See under Verse.
Blank wall, a wall in which there is no opening; a dead
wall. boat insectBoat bug Boat" bug` (Zo["o]l.)
An aquatic hemipterous insect of the genus Notonecta; -- so
called from swimming on its back, which gives it the
appearance of a little boat. Called also boat fly, boat
insect, boatman, and water boatman. Bringer inBringer Bring"er, n.
One who brings.
Yet the first bringer of unwelcome news Hath but a
losing office. --Shak.
Bringer in, one who, or that which, introduces. brown Indian hempAmbary Am*ba"ry, n., or Ambary hemp Ambary hemp . [Hind.
amb[=a]r[=a], amb[=a]r[=i].]
A valuable East Indian fiber plant (Hibiscus cannabinus),
or its fiber, which is used throughout India for making
ropes, cordage, and a coarse canvas and sackcloth; -- called
also brown Indian hemp.
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