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Breach :: Breach (n.) Specifically: A breaking or infraction of a law, or of any obligation or tie; violation; non-fulfillment; as, a breach of contract; a breach of promise..

Fraction :: Fraction (v. t.) To separate by means of, or to subject to, fractional distillation or crystallization; to fractionate; -- frequently used with out; as, to fraction out a certain grade of oil from pretroleum..

Rule :: Rule (a.) A measuring instrument consisting of a graduated bar of wood, ivory, metal, or the like, which is usually marked so as to show inches and fractions of an inch, and jointed so that it may be folded compactly..

Prism :: Prism (n.) A transparent body, with usually three rectangular plane faces or sides, and two equal and parallel triangular ends or bases; -- used in experiments on refraction, dispersion, etc..

Fractionary :: Fractionary (a.) Fractional.

Argument :: Argument (n.) The quantity on which another quantity in a table depends; as, the altitude is the argument of the refraction..

Anaclastics :: Anaclastics (n.) That part of optics which treats of the refraction of light; -- commonly called dioptrics.

Diacaustic :: Diacaustic (n.) That which burns by refraction, as a double convex lens, or the sun's rays concentrated by such a lens, sometimes used as a cautery..

Lap :: Lap (n.) One circuit around a race track, esp. when the distance is a small fraction of a mile; as, to run twenty laps; to win by three laps. See Lap, to fold, 2..

Dioptrics :: Dioptrics (n.) The science of the refraction of light; that part of geometrical optics which treats of the laws of the refraction of light in passing from one medium into another, or through different mediums, as air, water, or glass, and esp. through different lenses; -- distinguished from catoptrics, which refers to reflected light..

Halo :: Halo (n.) A luminous circle, usually prismatically colored, round the sun or moon, and supposed to be caused by the refraction of light through crystals of ice in the atmosphere. Connected with halos there are often white bands, crosses, or arches, resulting from the same atmospheric conditions..

Integer :: Integer (n.) A complete entity; a whole number, in contradistinction to a fraction or a mixed number..

Uniaxial :: Uniaxial (a.) Having but one optic axis, or line of no double refraction..

Spectrum :: Spectrum (n.) The several colored and other rays of which light is composed, separated by the refraction of a prism or other means, and observed or studied either as spread out on a screen, by direct vision, by photography, or otherwise. See Illust. of Light, and Spectroscope..

Diffraction :: Diffraction (n.) The deflection and decomposition of light in passing by the edges of opaque bodies or through narrow slits, causing the appearance of parallel bands or fringes of prismatic colors, as by the action of a grating of fine lines or bars..

Scrip :: Scrip (n.) Paper fractional currency.

Diffractive :: Diffractive (a.) That produces diffraction.

Irrational :: Irrational (a.) Not capable of being exactly expressed by an integral number, or by a vulgar fraction; surd; -- said especially of roots. See Surd..

Eriometer :: Eriometer (n.) An instrument for measuring the diameters of minute particles or fibers, from the size of the colored rings produced by the diffraction of the light in which the objects are viewed..

Benzene :: Benzene (n.) A volatile, very inflammable liquid, C6H6, contained in the naphtha produced by the destructive distillation of coal, from which it is separated by fractional distillation. The name is sometimes applied also to the impure commercial product or benzole, and also, but rarely, to a similar mixed product of petroleum..

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