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Concho-spiral
Concho-spiral Con`cho-spi"ral, n.
A kind of spiral curve found in certain univalve shells.
--Agassiz.
Equiangular spiralSpiral Spi"ral, n. [Cf. F. spirale. See Spiral, a.]
1. (Geom.) A plane curve, not re["e]ntrant, described by a
point, called the generatrix, moving along a straight line
according to a mathematical law, while the line is
revolving about a fixed point called the pole. Cf.
Helix.
2. Anything which has a spiral form, as a spiral shell.
Equiangular spiral,a plane curve which cuts all its
generatrices at the same angle. Same as Logarithmic
spiral, under Logarithmic.
Spiral of Archimedes, a spiral the law of which is that the
generatrix moves uniformly along the revolving line, which
also moves uniformly. Equiangular spiralEquiangular E`qui*an"gu*lar, a. [Equi- + angular. Cf.
Equangular.]
Having equal angles; as, an equiangular figure; a square is
equiangular.
Equiangular spiral. (Math.) See under Spiral, n.
Mutually equiangular, applied to two figures, when every
angle of the one has its equal among the angles of the
other. Hyperbolic spiralHyperbolic Hy`per*bol"ic, Hyperbolical Hy`per*bol"ic*al, a.
[L. hyperbolicus, Gr. ?: cf. F. hyperbolique.]
1. (Math.) Belonging to the hyperbola; having the nature of
the hyperbola.
2. (Rhet.) Relating to, containing, or of the nature of,
hyperbole; exaggerating or diminishing beyond the fact;
exceeding the truth; as, an hyperbolical expression.
``This hyperbolical epitaph.' --Fuller.
Hyperbolic functions (Math.), certain functions which have
relations to the hyperbola corresponding to those which
sines, cosines, tangents, etc., have to the circle; and
hence, called hyperbolic sines, hyperbolic cosines,
etc.
Hyperbolic logarithm. See Logarithm.
Hyperbolic spiral (Math.), a spiral curve, the law of which
is, that the distance from the pole to the generating
point varies inversely as the angle swept over by the
radius vector. Logarithmic spiralLogarithmic Log`a*rith"mic, Logarithmical Log`a*rith"mic*al,
a. [Cf. F. logarithmique.]
Of or pertaining to logarithms; consisting of logarithms.
Logarithmic curve (Math.), a curve which, referred to a
system of rectangular co["o]rdinate axes, is such that the
ordinate of any point will be the logarithm of its
abscissa.
Logarithmic spiral, a spiral curve such that radii drawn
from its pole or eye at equal angles with each other are
in continual proportion. See Spiral. Logarithmic spiralSpiral Spi"ral, n. [Cf. F. spirale. See Spiral, a.]
1. (Geom.) A plane curve, not re["e]ntrant, described by a
point, called the generatrix, moving along a straight line
according to a mathematical law, while the line is
revolving about a fixed point called the pole. Cf.
Helix.
2. Anything which has a spiral form, as a spiral shell.
Equiangular spiral,a plane curve which cuts all its
generatrices at the same angle. Same as Logarithmic
spiral, under Logarithmic.
Spiral of Archimedes, a spiral the law of which is that the
generatrix moves uniformly along the revolving line, which
also moves uniformly. Multispiral
Multispiral Mul`ti*spi"ral, a. [Multi- + spiral.] (Zo["o]l.)
Having numerous spiral coils round a center or nucleus; --
said of the opercula of certain shells.
Musculospiral
Musculospiral Mus`cu*lo*spi"ral, a. [L. musculus muscle + E.
spiral.] (Anat.)
Of or pertaining to the muscles, and taking a spiral course;
-- applied esp. to a large nerve of the arm.
Parabolic spiralParabolic Par`a*bol"ic, Parabolical Par`a*bol"ic*al, a. [Gr.
paraboliko`s figurative: cf. F. parabolique. See Parable.]
1. Of the nature of a parable; expressed by a parable or
figure; allegorical; as, parabolical instruction.
2. [From Parabola.] (Geom.)
(a) Having the form or nature of a parabola; pertaining
to, or resembling, a parabola; as, a parabolic curve.
(b) Generated by the revolution of a parabola, or by a
line that moves on a parabola as a directing curve;
as, a parabolic conoid.
Parabolic conoid, a paraboloid; a conoid whose directing
curve is a parabola. See Conoid.
Parabolic mirror (Opt.), a mirror having a paraboloidal
surface which gives for parallel rays (as those from very
distant objects) images free from aberration. It is used
in reflecting telescopes.
Parabolic spindle, the solid generated by revolving the
portion of a parabola cut off by a line drawn at right
angles to the axis of the curve, about that line as an
axis.
Parabolic spiral, a spiral curve conceived to be formed by
the periphery of a semiparabola when its axis is wrapped
about a circle; also, any other spiral curve having an
analogy to the parabola. Paucispiral
Paucispiral Pau`ci*spi"ral, a. [L. paucus few + E. spiral.]
(Zo["o]l.)
Having few spirals, or whorls; as, a paucispiral operculum or
shell.
SpiralSpiral Spi"ral, n. [Cf. F. spirale. See Spiral, a.]
1. (Geom.) A plane curve, not re["e]ntrant, described by a
point, called the generatrix, moving along a straight line
according to a mathematical law, while the line is
revolving about a fixed point called the pole. Cf.
Helix.
2. Anything which has a spiral form, as a spiral shell.
Equiangular spiral,a plane curve which cuts all its
generatrices at the same angle. Same as Logarithmic
spiral, under Logarithmic.
Spiral of Archimedes, a spiral the law of which is that the
generatrix moves uniformly along the revolving line, which
also moves uniformly. SpiralSpiral Spi"ral, a. [Cf. F. spiral. See Spire a winding
line.]
1. Winding or circling round a center or pole and gradually
receding from it; as, the spiral curve of a watch spring.
2. Winding round a cylinder or imaginary axis, and at the
same time rising or advancing forward; winding like the
thread of a screw; helical.
3. (Geom.) Of or pertaining to a spiral; like a spiral.
Spiral gear, or Spiral wheel (Mach.), a gear resembling
in general a spur gear, but having its teeth cut at an
angle with its axis, or so that they form small portions
of screws or spirals.
Spiral gearing, a kind of gearing sometimes used in light
machinery, in which spiral gears, instead of bevel gears,
are used to transmit motion between shafts that are not
parallel.
Spiral operculum, an operculum whih has spiral lines of
growth.
Spiral shell, any shell in which the whorls form a spiral
or helix.
Spiral spring. See the Note under Spring, n., 4. Spiral axisAxis 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. Spiral gearSpiral Spi"ral, a. [Cf. F. spiral. See Spire a winding
line.]
1. Winding or circling round a center or pole and gradually
receding from it; as, the spiral curve of a watch spring.
2. Winding round a cylinder or imaginary axis, and at the
same time rising or advancing forward; winding like the
thread of a screw; helical.
3. (Geom.) Of or pertaining to a spiral; like a spiral.
Spiral gear, or Spiral wheel (Mach.), a gear resembling
in general a spur gear, but having its teeth cut at an
angle with its axis, or so that they form small portions
of screws or spirals.
Spiral gearing, a kind of gearing sometimes used in light
machinery, in which spiral gears, instead of bevel gears,
are used to transmit motion between shafts that are not
parallel.
Spiral operculum, an operculum whih has spiral lines of
growth.
Spiral shell, any shell in which the whorls form a spiral
or helix.
Spiral spring. See the Note under Spring, n., 4. Spiral gearingSpiral Spi"ral, a. [Cf. F. spiral. See Spire a winding
line.]
1. Winding or circling round a center or pole and gradually
receding from it; as, the spiral curve of a watch spring.
2. Winding round a cylinder or imaginary axis, and at the
same time rising or advancing forward; winding like the
thread of a screw; helical.
3. (Geom.) Of or pertaining to a spiral; like a spiral.
Spiral gear, or Spiral wheel (Mach.), a gear resembling
in general a spur gear, but having its teeth cut at an
angle with its axis, or so that they form small portions
of screws or spirals.
Spiral gearing, a kind of gearing sometimes used in light
machinery, in which spiral gears, instead of bevel gears,
are used to transmit motion between shafts that are not
parallel.
Spiral operculum, an operculum whih has spiral lines of
growth.
Spiral shell, any shell in which the whorls form a spiral
or helix.
Spiral spring. See the Note under Spring, n., 4. Spiral of ArchimedesSpiral Spi"ral, n. [Cf. F. spirale. See Spiral, a.]
1. (Geom.) A plane curve, not re["e]ntrant, described by a
point, called the generatrix, moving along a straight line
according to a mathematical law, while the line is
revolving about a fixed point called the pole. Cf.
Helix.
2. Anything which has a spiral form, as a spiral shell.
Equiangular spiral,a plane curve which cuts all its
generatrices at the same angle. Same as Logarithmic
spiral, under Logarithmic.
Spiral of Archimedes, a spiral the law of which is that the
generatrix moves uniformly along the revolving line, which
also moves uniformly. Spiral operculumSpiral Spi"ral, a. [Cf. F. spiral. See Spire a winding
line.]
1. Winding or circling round a center or pole and gradually
receding from it; as, the spiral curve of a watch spring.
2. Winding round a cylinder or imaginary axis, and at the
same time rising or advancing forward; winding like the
thread of a screw; helical.
3. (Geom.) Of or pertaining to a spiral; like a spiral.
Spiral gear, or Spiral wheel (Mach.), a gear resembling
in general a spur gear, but having its teeth cut at an
angle with its axis, or so that they form small portions
of screws or spirals.
Spiral gearing, a kind of gearing sometimes used in light
machinery, in which spiral gears, instead of bevel gears,
are used to transmit motion between shafts that are not
parallel.
Spiral operculum, an operculum whih has spiral lines of
growth.
Spiral shell, any shell in which the whorls form a spiral
or helix.
Spiral spring. See the Note under Spring, n., 4. Spiral shellSpiral Spi"ral, a. [Cf. F. spiral. See Spire a winding
line.]
1. Winding or circling round a center or pole and gradually
receding from it; as, the spiral curve of a watch spring.
2. Winding round a cylinder or imaginary axis, and at the
same time rising or advancing forward; winding like the
thread of a screw; helical.
3. (Geom.) Of or pertaining to a spiral; like a spiral.
Spiral gear, or Spiral wheel (Mach.), a gear resembling
in general a spur gear, but having its teeth cut at an
angle with its axis, or so that they form small portions
of screws or spirals.
Spiral gearing, a kind of gearing sometimes used in light
machinery, in which spiral gears, instead of bevel gears,
are used to transmit motion between shafts that are not
parallel.
Spiral operculum, an operculum whih has spiral lines of
growth.
Spiral shell, any shell in which the whorls form a spiral
or helix.
Spiral spring. See the Note under Spring, n., 4. Spiral springSpiral Spi"ral, a. [Cf. F. spiral. See Spire a winding
line.]
1. Winding or circling round a center or pole and gradually
receding from it; as, the spiral curve of a watch spring.
2. Winding round a cylinder or imaginary axis, and at the
same time rising or advancing forward; winding like the
thread of a screw; helical.
3. (Geom.) Of or pertaining to a spiral; like a spiral.
Spiral gear, or Spiral wheel (Mach.), a gear resembling
in general a spur gear, but having its teeth cut at an
angle with its axis, or so that they form small portions
of screws or spirals.
Spiral gearing, a kind of gearing sometimes used in light
machinery, in which spiral gears, instead of bevel gears,
are used to transmit motion between shafts that are not
parallel.
Spiral operculum, an operculum whih has spiral lines of
growth.
Spiral shell, any shell in which the whorls form a spiral
or helix.
Spiral spring. See the Note under Spring, n., 4. Spiral wheelSpiral Spi"ral, a. [Cf. F. spiral. See Spire a winding
line.]
1. Winding or circling round a center or pole and gradually
receding from it; as, the spiral curve of a watch spring.
2. Winding round a cylinder or imaginary axis, and at the
same time rising or advancing forward; winding like the
thread of a screw; helical.
3. (Geom.) Of or pertaining to a spiral; like a spiral.
Spiral gear, or Spiral wheel (Mach.), a gear resembling
in general a spur gear, but having its teeth cut at an
angle with its axis, or so that they form small portions
of screws or spirals.
Spiral gearing, a kind of gearing sometimes used in light
machinery, in which spiral gears, instead of bevel gears,
are used to transmit motion between shafts that are not
parallel.
Spiral operculum, an operculum whih has spiral lines of
growth.
Spiral shell, any shell in which the whorls form a spiral
or helix.
Spiral spring. See the Note under Spring, n., 4. Spirality
Spirality Spi*ral"i*ty, n.
The quality or states of being spiral.
Spirally
Spirally Spi"ral*ly, adv.
In a spiral form, manner, or direction.
Spiralozooid
Spiralozooid Spi*ra`lo*zo"oid, n. [Spiral + zooid. So called
because they often have a spiral form when contracted.]
(Zo["o]l.)
One of the special defensive zooids of certain hydroids. They
have the form of long, slender tentacles, and bear lasso
cells.
SuspiralSuspiral Sus*pir"al, n. [From Suspire.]
1. A breathing hole; a vent or ventiduct.
2. A spring of water passing under ground toward a cistern or
conduit. Trichina spiralisTrichina Tri*chi"na (-n[.a]), n.; pl. Trichin[ae]. [NL., fr.
Gr. ? hairy, made of hair, fr. tri`x, tricho`s, hair.]
(Zo["o]l.)
A small, slender nematoid worm (Trichina spiralis) which,
in the larval state, is parasitic, often in immense numbers,
in the voluntary muscles of man, the hog, and many other
animals. When insufficiently cooked meat containing the
larv[ae] is swallowed by man, they are liberated and rapidly
become adult, pair, and the ovoviviparous females produce in
a short time large numbers of young which find their way into
the muscles, either directly, or indirectly by means of the
blood. Their presence in the muscles and the intestines in
large numbers produces trichinosis. Vallisneria spiralisTape Tape, n. [AS. t[ae]ppe a fillet. Cf. Tapestry,
Tippet.]
1. A narrow fillet or band of cotton or linen; a narrow woven
fabric used for strings and the like; as, curtains tied
with tape.
2. A tapeline; also, a metallic ribbon so marked as to serve
as a tapeline; as, a steel tape.
Red tape. See under Red.
Tape grass (Bot.), a plant (Vallisneria spiralis) with
long ribbonlike leaves, growing in fresh or brackish
water; -- called also fresh-water eelgrass, and, in
Maryland, wild celery.
Tape needle. See Bodkin, n., 4.
Meaning of Piral from wikipedia
-
Piral is a
village and muni****lity in the
Qusar Rayon of Azerbaijan. It has a po****tion of 1,944. The
postal code is AZ3833.
Piral at
GEOnet Names Server...
- Pir
Alqar (Persian: پيرالقير, also
Romanized as Pīr Ālqar and
Pīrāl Qīr) is a
village in
Balghelu Rural District, in the
Central District of
Ardabil County...
-
Scientific name
English name
Swedish name
Habitat Occurrence Red List
status Myxinidae Myxine glutinosa Hagfish Pirål Marine Native and
common Not evaluated...
-
Peral (Portuguese pronunciation: [
pɨˈɾal]) is a
freguesia (civil parish) of
Cadaval Muni****lity, Portugal. The po****tion in 2011 was 905, in an area...
-
turns the
metal into white,
subong (combining gold,
silver and copper) and
piral (bonding with
silver or copper).
These are done with
tools called sangagan...
- the
district are Ali-abad, Faiz-abad, Khanpur, Bari Shaakh, Mehrabpur,
Piral-abad, Qabula, Samaji, Sobarani, Usta
Muhammad I, Usta
Muhammad II, and Usta...
-
under its jurisdiction. Its seat is at
Pilal Village (皮拉勒村). The name of
Piral is from
Uighur language, that
evolved from the word "pul-al",
meaning "paying"...
-
Teelon Ki
Piral...
- 215, D.3. AER
Archivo SNAHN,
Signatura OSUNA, C.1860, D.3 Menéndez and
Piral, XV volume, p. 160-161 Menéndez and Pidal, XV volume, p. 162. Sánchez Loro...
-
direct encounter between the Pak army and the
freedom fighters were held at
Piral Danga, Gangra,
Kulfatpur and
Rangamati with the
heavy casualty on both sides...
