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ite compound always contains the same elements in the same proportions by weight; and, if two or more elements form more than one compound with each other, the relative proportions of each are fixed. Compare Law of multiple proportions, under Multiple.

Three figures taken together in numeration; thus, 140 is one degree, 222,140 two degrees.

work constructed beyond the main ditch of a fortress, and in front of the curtain between two bastions, intended to defend the curtain; a ravelin. See Ravelin.

to the senses or reason. Those intervening ideas which serve to show the agreement of any two others are called "proofs;" and where agreement or disagreement is by this means plainly and clearly perceived, it is called demonstration. Locke.

A light, open, two-wheeled carriage for one horse; a kind of gig. ("The term and vehicle common about 1825." Latham.)

To put out of phase, as two parts of a single alternating current.

A member of the Chamber of Deputies. [France] Chamber of Deputies, one of the two branches of the French legilative assembly; -- formerly called Corps Législatif. Its members, called deputies, are elected by the people voting in districts.

; to recognize transmission of; as, he derives this word from the Anglo-Saxon. From these two causes . . . an ancient set of physicians derived all diseases. Arbuthnot.

the species have a greenish color, and the cells generally appear as if they consisted of two coalescing halves.

., pl. Dessert-spoonfuls, as much as a dessert spoon will hold, usually reckoned at about two and a half fluid drams.

A bar, connected with a switch, longer than the distance between any two consecutive wheels of a train (45 to 50 feet), laid inside a rail and operated by the wheels so that the switch cannot be thrown until all the train is past the switch.

determinant is written by placing the numbers from which it is formed in a square between two vertical lines. The theory of determinants forms a very important branch of modern mathematics.

from Detonate. Detonating gas, a mixture of two volumes of hydrogen with one volume of oxygen, which explodes with a loud report upon ignition. -- Detonating powder, any powder or solid substance, as fulminate of mercury, which when struck, explodes with violence and a loud report. -- Detonating primer, a primer expl…

Two; a card or a die with two spots; as, the deuce of hearts.

A compound containing in the molecule two atoms of hydrogen united with some other element or radical. [Obs.]

A compound containing in the molecule two atoms of oxygen united with some other element or radical; -- usually called dioxide, or less frequently, binoxide.

See under Blue. -- Cartesian devil. See under Cartesian. -- Devil bird (Zoöl.), one of two or more South African drongo shrikes (Edolius retifer, and E. remifer), believed by the natives to be connected with sorcery. -- Devil may care, reckless, defiant of authority; -- used adjectively. Longfellow. -- Devil's apr…

A prefix, signifying twofold, double, twice; (Chem.)

d game or sport (revived under this name) consisting in whirling on a string, fastened to two sticks, a small somewhat spool- shaped object (called the diabolo) so as to balance it on a string, toss it in the air and catch it, etc.

Divalent; -- said of a base or radical as capable of saturating two acid monad radicals or a dibasic acid. Cf. Dibasic, a., and Biacid.