Definition of Meridian. Meaning of Meridian. Synonyms of Meridian
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Definition of Meridian
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AntemeridianAntemeridian An`te*me*rid"i*an, a. [L. antemeridianus; ante +
meridianus belonging to midday or noon. See Meridian.]
Being before noon; in or pertaining to the forenoon. (Abbrev.
a. m.) Chlorogalum pomeridianumAmole A*mo"le, n. [Mex.] (Bot.)
Any detergent plant, or the part of it used as a detergent,
as the roots of Agave Americana, Chlorogalum
pomeridianum, etc. [Sp. Amer. & Mex.] Chlorogalum pomeridianumSoap Soap, n. [OE. sope, AS. s[=a]pe; akin to D. zeep, G.
seife, OHG. seifa, Icel. s[=a]pa, Sw. s?pa, Dan. s?be, and
perhaps to AS. s[=i]pan to drip, MHG. s[=i]fen, and L. sebum
tallow. Cf. Saponaceous.]
A substance which dissolves in water, thus forming a lather,
and is used as a cleansing agent. Soap is produced by
combining fats or oils with alkalies or alkaline earths,
usually by boiling, and consists of salts of sodium,
potassium, etc., with the fatty acids (oleic, stearic,
palmitic, etc.). See the Note below, and cf.
Saponification. By extension, any compound of similar
composition or properties, whether used as a cleaning agent
Note: In general, soaps are of two classes, hard and soft.
Calcium, magnesium, lead, etc., form soaps, but they
are insoluble and useless.
The purifying action of soap depends upon the
fact that it is decomposed by a large quantity of
water into free alkali and an insoluble acid
salt. The first of these takes away the fatty
dirt on washing, and the latter forms the soap
lather which envelops the greasy matter and thus
tends to remove it. --Roscoe &
Castile soap, a fine-grained hard soap, white or mottled,
made of olive oil and soda; -- called also Marseilles, or
Hard soap, any one of a great variety of soaps, of
different ingredients and color, which are hard and
compact. All solid soaps are of this class.
Lead soap, an insoluble, white, pliable soap made by
saponifying an oil (olive oil) with lead oxide; -- used
externally in medicine. Called also lead plaster,
Marine soap. See under Marine.
Pills of soap (Med.), pills containing soap and opium.
Potash soap, any soap made with potash, esp. the soft
soaps, and a hard soap made from potash and castor oil.
Pumice soap, any hard soap charged with a gritty powder, as
silica, alumina, powdered pumice, etc., which assists
mechanically in the removal of dirt.
Resin soap, a yellow soap containing resin, -- used in
Silicated soap, a cheap soap containing water glass (sodium
Soap bark. (Bot.) See Quillaia bark.
Soap bubble, a hollow iridescent globe, formed by blowing a
film of soap suds from a pipe; figuratively, something
attractive, but extremely unsubstantial.
This soap bubble of the metaphysicians. --J. C.
Soap cerate, a cerate formed of soap, olive oil, white wax,
and the subacetate of lead, sometimes used as an
application to allay inflammation.
Soap fat, the refuse fat of kitchens, slaughter houses,
etc., used in making soap.
Soap liniment (Med.), a liniment containing soap, camphor,
Soap nut, the hard kernel or seed of the fruit of the
soapberry tree, -- used for making beads, buttons, etc.
Soap plant (Bot.), one of several plants used in the place
of soap, as the Chlorogalum pomeridianum, a California
plant, the bulb of which, when stripped of its husk and
rubbed on wet clothes, makes a thick lather, and smells
not unlike new brown soap. It is called also soap apple,
soap bulb, and soap weed.
Soap tree. (Bot.) Same as Soapberry tree.
Soda soap, a soap containing a sodium salt. The soda soaps
are all hard soaps.
Soft soap, a soap of a gray or brownish yellow color, and
of a slimy, jellylike consistence, made from potash or the
lye from wood ashes. It is strongly alkaline and often
contains glycerin, and is used in scouring wood, in
cleansing linen, in dyehouses, etc. Figuratively,
flattery; wheedling; blarney. [Colloq.]
Toilet soap, hard soap for the toilet, usually colored and
Circummeridian Cir`cum*me*rid"i*an, a. [Pref. circum- +
About, or near, the meridian.
Meridian altitudeAltitude Al"ti*tude, n. [L. altitudo, fr. altus high. Cf.
Altar, Haughty, Enhance.]
1. Space extended upward; height; the perpendicular elevation
of an object above its foundation, above the ground, or
above a given level, or of one object above another; as,
the altitude of a mountain, or of a bird above the top of
2. (Astron.) The elevation of a point, or star, or other
celestial object, above the horizon, measured by the arc
of a vertical circle intercepted between such point and
the horizon. It is either true or apparent; true when
measured from the rational or real horizon, apparent when
from the sensible or apparent horizon.
3. (Geom.) The perpendicular distance from the base of a
figure to the summit, or to the side parallel to the base;
as, the altitude of a triangle, pyramid, parallelogram,
4. Height of degree; highest point or degree.
He is [proud] even to the altitude of his virtue.
5. Height of rank or excellence; superiority. --Swift.
6. pl. Elevation of spirits; heroics; haughty airs. [Colloq.]
The man of law began to get into his altitude. --Sir
Meridian altitude, an arc of the meridian intercepted
between the south point on the horizon and any point on
the meridian. See Meridian, 3. PostmeridianPostmeridian Post`me*rid"i*an, a. [L. postmeridianus; post
after + meridianus. See Meridian.]
1. Coming after the sun has passed the meridian; being in, or
belonging to, the afternoon. (Abbrev. P. M.)
2. Fig., belonging to the after portion of life; late. [R.] Prime meridian Prime and ultimate ratio. (Math.). See Ultimate.
Prime conductor. (Elec.) See under Conductor.
Prime factor (Arith.), a factor which is a prime number.
Prime figure (Geom.), a figure which can not be divided
into any other figure more simple than itself, as a
triangle, a pyramid, etc.
Prime meridian (Astron.), the meridian from which longitude
is reckoned, as the meridian of Greenwich or Washington.
Prime minister, the responsible head of a ministry or
executive government; applied particularly to that of
Prime mover. (Mech.)
(a) A natural agency applied by man to the production of
power. Especially: Muscular force; the weight and
motion of fluids, as water and air; heat obtained by
chemical combination, and applied to produce changes
in the volume and pressure of steam, air, or other
fluids; and electricity, obtained by chemical action,
and applied to produce alternation of magnetic force.
(b) An engine, or machine, the object of which is to
receive and modify force and motion as supplied by
some natural source, and apply them to drive other
machines; as a water wheel, a water-pressure engine, a
steam engine, a hot-air engine, etc.
(c) Fig.: The original or the most effective force in any
undertaking or work; as, Clarkson was the prime mover
in English antislavery agitation.
Prime number (Arith.), a number which is exactly divisible
by no number except itself or unity, as 5, 7, 11.
Prime vertical (Astron.), the vertical circle which passes
through the east and west points of the horizon.
Prime-vertical dial, a dial in which the shadow is
projected on the plane of the prime vertical.
Prime-vertical transit instrument, a transit instrument the
telescope of which revolves in the plane of the prime
vertical, -- used for observing the transit of stars over
Meaning of Meridian from wikipedia
- named Meridian Meridian
, Colorado, U.S. Meridian
, Florida, U.S. Meridian
, Georgia, U.S. Meridian
, Idaho, U.S. Meridian
, Mississippi, U.S. Meridian
is the meridian
(a line of longitude) in a geographic coordinate system
at which longitude
to be 0°. Together, a prime meridian
- A (geographic) meridian
(or line of longitude) is the half of an imaginary great circle
on the Earth's surface, terminated
by the North
Pole and the South...
- The 180th meridian
is the meridian
180° both east and west of the Prime Meridian
, with which
a great circle dividing
is the seventh largest
city in the state
of Mississippi, United
States. It is the county
seat of Lauderdale County
and the prin****l city of the...
- In astronomy, the meridian
is the great circle
poles, as well as the zenith
of an observer's location. Consequently...
- The meridian system
(simplified Chinese: 经络; traditional
Chinese: 經絡; pinyin: jīngluò, also called channel
network) is a concept
- major meridians
, commonly referred
to as "the primary meridians
", are bilateral
and are ****ociated with internal
organs. The remaining eight meridians
- Autonomous sensory meridian response
auto sensory meridian
response, is a tingling sensation
that typically begins
on the scalp
from pole to pole) connect points
with the same longitude. By convention, one of these, the Prime Meridian
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