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Fractionally :: Fractionally (adv.) By fractions or separate portions; as, to distill a liquid fractionally, that is, so as to separate different portions..

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..

Anaclastic :: Anaclastic (a.) Produced by the refraction of light, as seen through water; as, anaclastic curves..

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..

Increment :: Increment (n.) The increase of a variable quantity or fraction from its present value to its next ascending value; the finite quantity, generally variable, by which a variable quantity is increased..

Refraction :: Refraction (n.) The correction which is to be deducted from the apparent altitude of a heavenly body on account of atmospheric refraction, in order to obtain the true altitude..

Refractometer :: Refractometer (n.) A contrivance for exhibiting and measuring the refraction of light.

Dioptrical :: Dioptrical (a.) Of or pertaining to dioptrics; assisting vision by means of the refraction of light; refractive; as, the dioptric system; a dioptric glass or telescope..

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

Reciprocal :: Reciprocal (n.) The quotient arising from dividing unity by any quantity; thus, / is the reciprocal of 4; 1/(a +b) is the reciprocal of a + b. The reciprocal of a fraction is the fraction inverted, or the denominator divided by the numerator..

Part :: Part (n.) One of the portions, equal or unequal, into which anything is divided, or regarded as divided; something less than a whole; a number, quantity, mass, or the like, regarded as going to make up, with others, a larger number, quantity, mass, etc., whether actually separate or not; a piece; a fragment; a fraction; a division; a member; a constituent..

Grating :: Grating (n.) A system of close equidistant and parallel lines lines or bars, especially lines ruled on a polished surface, used for producing spectra by diffraction; -- called also diffraction grating..

Algorithm :: Algorithm (n.) The art of calculating with any species of notation; as, the algorithms of fractions, proportions, surds, etc..

Stereoscopic :: Stereoscope (n.) An optical instrument for giving to pictures the appearance of solid forms, as seen in nature. It combines in one, through a bending of the rays of light, two pictures, taken for the purpose from points of view a little way apart. It is furnished with two eyeglasses, and by refraction or reflection the pictures are superimposed, so as to appear as one to the observer..

Rainbow :: Rainbow (n.) A bow or arch exhibiting, in concentric bands, the several colors of the spectrum, and formed in the part of the hemisphere opposite to the sun by the refraction and reflection of the sun's rays in drops of falling rain..

Separatrix :: Separatrix (n.) The decimal point; the dot placed at the left of a decimal fraction, to separate it from the whole number which it follows. The term is sometimes also applied to other marks of separation..

Sexagesimal :: Sexagesimal (n.) A sexagesimal fraction.

Catadioptrical :: Catadioptrical (a.) Pertaining to, produced by, or involving, both the reflection and refraction of light; as, a catadioptric light..

Round :: Round (a.) Full; complete; not broken; not fractional; approximately in even units, tens, hundreds, thousands, etc.; -- said of numbers..

Neurine :: Neurine (n.) A poisonous organic base (a ptomaine) formed in the decomposition of protagon with boiling baryta water, and in the putrefraction of proteid matter. It was for a long time considered identical with choline, a crystalline body originally obtained from bile. Chemically, however, choline is oxyethyl-trimethyl-ammonium hydroxide, while neurine is vinyl-trimethyl-ammonium hydroxide..

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