English definition of Polar

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Definition of polar

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Polar (n.) The right line drawn through the two points of contact of the two tangents drawn from a given point to a given conic section. The given point is called the pole of the line. If the given point lies within the curve so that the two tangents become imaginary, there is still a real polar line which does not meet the curve, but which possesses other properties of the polar. Thus the focus and directrix are pole and polar. There are also poles and polar curves to curves of higher degree th

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Polar :: Polar (a.) 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..

Polaris :: Polaris (n.) The polestar. See North star, under North..

Polaric :: Polaric (a.) See Polar.

Bipolarity :: Bipolarity (n.) Bipolar quality.

Polarization :: Polarization (n.) The act of polarizing; the state of being polarized, or of having polarity..

Pyroelectric :: Pyroelectric (a.) Pertaining to, or dependent on, pyroelectricity; receiving electric polarity when heated..

Analyzer :: Analyzer (n.) The part of a polariscope which receives the light after polarization, and exhibits its properties..

Depolarize :: Depolarize (v. t.) To free from polarization, as the negative plate of the voltaic battery..

Electro-polar :: Electro-polar (a.) Possessing electrical polarity; positively electrified at one end, or on one surface, and negatively at the other; -- said of a conductor..

Pole :: Pole (n.) See Polarity, and Polar, n..

Polarimetry :: Polarimetry (n.) The art or process of measuring the polarization of light.

Magnetite :: Magnetite (n.) An oxide of iron (Fe3O4) occurring in isometric crystals, also massive, of a black color and metallic luster. It is readily attracted by a magnet and sometimes possesses polarity, being then called loadstone. It is an important iron ore. Called also magnetic iron..

Levogyrate :: Levogyrate (a.) Turning or twisting the plane of polarization towards the left, as levulose, levotartaric acid, etc..

Bipolar :: Bipolar (a.) Doubly polar; having two poles; as, a bipolar cell or corpuscle..

Periscii :: Periscii (n. pl.) Those who live within a polar circle, whose shadows, during some summer days, will move entirely round, falling toward every point of the compass..

Dextrorotatory :: Dextrorotatory (a.) Turning, or causing to turn, toward the right hand; esp., turning the plane of polarization of luminous rays toward the right hand; as, dextrorotatory crystals, sugars, etc. Cf. Levorotatory..

Depolarization :: Depolarization (n.) The act of depriving of polarity, or the result of such action; reduction to an unpolarized condition..

Dextro- :: Dextro- () having the property of turning the plane of polarized light to the right; as, dextrotartaric acid..

Levulose :: Levulose (n.) A sirupy variety of sugar, rarely obtained crystallized, occurring widely in honey, ripe fruits, etc., and hence called also fruit sugar. It is called levulose, because it rotates the plane of polarization to the left..

Pole :: Pole (n.) One of the opposite or contrasted parts or directions in which a polar force is manifested; a point of maximum intensity of a force which has two such points, or which has polarity; as, the poles of a magnet; the north pole of a needle..