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5 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Polar \Po"lar\, a. [Cf. F. polaire. See {Pole} of the earth.] 1. Of or pertaining to one of the poles of the earth, or of a sphere; situated near or proceeding from one of the poles; as polar regions; polar seas; polar winds. 2. Of or pertaining to the magnetic pole, or to the point to which the magnetic needle is directed. 3. (Geom.) Pertaining to reckoned from or having a common radiating point; as polar co["o]rdinates. {Polar axis}, that axis of an astronomical instrument, as an equatorial, which is parallel to the earths axis. {Polar bear} (Zo["o]l.), a large bear ({Ursus, or Thalarctos, maritimus}) inhabiting the arctic regions. It sometimes measures nearly nine feet in length and weighs 1,600 pounds. It is partially amphibious, very powerful, and the most carnivorous of all the bears. The fur is white, tinged with yellow. Called also {White bear}. See {Bear}. {Polar body}, {cell}, or {globule} (Biol.), a minute cell which separates by karyokinesis from the ovum during its maturation. In the maturation of ordinary ova two polar bodies are formed, but in parthogenetic ova only one The first polar body formed is usually larger than the second one and often divides into two after its separation from the ovum. Each of the polar bodies removes maternal chromatin from the ovum to make room for the chromatin of the fertilizing spermatozo["o]n; but their functions are not fully understood. {Polar circles} (Astron. & Geog.), two circles, each at a distance from a pole of the earth equal to the obliquity of the ecliptic, or about 23[deg] 28', the northern called the arctic circle, and the southern the antarctic circle. {Polar clock}, a tube, containing a polarizing apparatus, turning on an axis parallel to that of the earth, and indicating the hour of the day on an hour circle, by being turned toward the plane of maximum polarization of the light of the sky, which is always 90[deg] from the sun. {Polar co["o]rdinates}. See under 3d {Co["o]rdinate}. {Polar dial}, a dial whose plane is parallel to a great circle passing through the poles of the earth. --Math. Dict. {Polar distance}, the angular distance of any point on a sphere from one of its poles, particularly of a heavenly body from the north pole of the heavens. {Polar equation of a line} or {surface}, an equation which expresses the relation between the polar co["o]rdinates of every point of the line or surface. {Polar forces} (Physics), forces that are developed and act in pairs, with opposite tendencies or properties in the two elements, as magnetism, electricity, etc {Polar hare} (Zo["o]l.), a large hare of Arctic America ({Lepus arcticus}), which turns pure white in winter. It is probably a variety of the common European hare ({L. timidus}). {Polar lights}, the aurora borealis or australis. {Polar}, or {Polaric}, {opposition} or {contrast} (Logic), an opposition or contrast made by the existence of two opposite conceptions which are the extremes in a species, as white and black in colors; hence as great an opposition or contrast as possible. {Polar projection}. See under {Projection}. {Polar spherical triangle} (Spherics), a spherical triangle whose three angular points are poles of the sides of a given triangle. See 4th {Pole}, 2. {Polar whale} (Zo["o]l.), the right whale, or bowhead. See {Whale}. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Contrast \Con*trast"\, v. i. [imp. & p. p. {Contrasted}; p. pr & vb n. {Contrasting}.] [F. contraster, LL contrastare to resist, withstand, fr L. contra + stare to stand See {Stand}.] To stand in opposition; to exhibit difference, unlikeness, or opposition of qualities. The joints which divide the sandstone contrast finely with the divisional planes which separate the basalt into pillars. --Lyell. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Contrast \Con*trast"\, v. t. 1. To set in opposition, or over against, in order to show the differences between, or the comparative excellences and defects of to compare by difference or contrariety of qualities; as to contrast the present with the past. 2. (Fine Arts) To give greater effect to as to a figure or other object, by putting it in some relation of opposition to another figure or object. the figures of the groups must not be all on side . . . but must contrast each other by their several position. --Dryden. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Contrast \Con"trast\ (k[o^]n"tr[.a]st), n. [F. contraste: cf It contrasto.] 1. The act of contrasting, or the state of being contrasted; comparison by contrariety of qualities. place the prospect of the soul In sober contrast with reality. --Wordsworth. 2. Opposition or dissimilitude of things or qualities; unlikeness, esp. as shown by juxtaposition or comparison. The contrasts and resemblances of the seasons. --Whewell. 3. (Fine Arts) The opposition of varied forms, colors, etc., which by such juxtaposition more vividly express each other's peculiarities. --Fairholt. From WordNet r 1.6 [wn]: contrast n 1: the opposition or dissimilarity of things that are compared; "in contrast to", "by contrast" [syn: {direct contrast}] 2: the act of distinguishing by comparing differences 3: a conceptual separation or demarcation: "there is a narrow line between sanity and insanity" [syn: {line}, {dividing line}, {demarcation}] 4: the perceptual effect of the juxtaposition of very different colors v 1: put in contrast 2: to show differences when compared; be different [syn: {counterpoint}] 3: put in contrast
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