Search the Dictionary

Thousandth; consisting of thousandth parts; as, millesimal fractions.

ly, one between a Roman Catholic and a Protestant. -- Mixed number, a whole number and a fraction taken together. -- Mixed train, a railway train containing both passenger and freight cars. -- Mixed voices (Mus.), voices of both males and females united in the same performance.

maine) 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-…

The term in a fraction which indicates the number of fractional units that are taken.

Any number, proper or improper fraction, or incommensurable ratio. The term also includes any imaginary expression like m + nsq. root-1, where m and n are real numerics.

seen. (b) The line in a doubly refracting crystal, in the direction of which no double refraction occurs. A uniaxial crystal has one such line, a biaxial crystal has two. -- Optical circle (Opt.), a graduated circle used for the measurement of angles in optical experiments. -- Optical square, a surveyor's instrument…

d circular polarization of light. -- Optically positive, Optically negative. See under Refraction.

f curves defined by the equation y = axn where n is a positive whole number or a positive fraction. For the cubical parabola n = 3; for the semicubical parabola n = Cubical, and Semicubical. The parabolas have infinite branches, but no rectilineal asymptotes.

er number, quantity, mass, etc., whether actually separate or not; a piece; a fragment; a fraction; a division; a member; a constituent. And kept back part of the price, . . . and brought a certain part and laid it at the apostles'feet. Acts v. 2. Our ideas of extension and number -- do they not contain a secret relati…

on, upon the hypothesis that some of the variables are for the time constant. -- Partial fractions (Alg.), fractions whose sum equals a given fraction. -- Partial tones (Music), the simple tones which in combination form an ordinary tone; the overtones, or harmonics, which, blending with a fundamental tone, cause its…

referred for the purpose of determining their relative position in space. -- Plane of refraction or reflection (Opt.), the plane in which lie both the incident ray and the refracted or reflected ray.

c radicals. Positive crystals (Opt.), a doubly refracting crystal in which the index of refraction for the extraordinary ray is greater than for the ordinary ray, and the former is refracted nearer to the axis than the latter, as quartz and ice; -- opposed to negative crystal, or one in which this characteristic is rev…

onformity to a rule or a standard; definiteness. I have left out the utmost precisions of fractions. Locke.

r sides, and two equal and parallel triangular ends or bases; -- used in experiments on refraction, dispersion, etc.

, one of the single florets, or corollets, in an aggregate or compound flower. -- Proper fraction (Arith.) a fraction in which the numerator is less than the denominator. -- Proper nectary (Bot.), a nectary separate from the petals and other parts of the flower. -- Proper noun (Gram.), a name belonging to an individ…

rs 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.

, below. -- Extraordinary ray (Opt.), that one or two parts of a ray divided by double refraction which does not follow the ordinary law of refraction. -- Ordinary ray (Opt.) that one of the two parts of a ray divided by double refraction which follows the usual or ordinary law of refraction. -- Pencil of rays (Geom…

thus ¼ 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.

To change the form of a quantity or expression without altering its value; as, to reduce fractions to their lowest terms, to a common denominator, etc.

Turned from a direct course by refraction; as, refracted rays of light.