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Pentavalent :: Pentavalent (a.) Having a valence of five; -- said of certain atoms and radicals.

Davyum :: Davyum (n.) A rare metallic element found in platinum ore. It is a white malleable substance. Symbol Da. Atomic weight 154.

Fortuitous :: Fortuitous (a.) Happening by chance; coming or occuring unexpectedly, or without any known cause; chance; as, the fortuitous concourse of atoms..

Ternary :: Ternary (a.) Containing, or consisting of, three different parts, as elements, atoms, groups, or radicals, which are regarded as having different functions or relations in the molecule; thus, sodic hydroxide, NaOH, is a ternary compound..

Calcium :: Calcium (n.) An elementary substance; a metal which combined with oxygen forms lime. It is of a pale yellow color, tenacious, and malleable. It is a member of the alkaline earth group of elements. Atomic weight 40. Symbol Ca..

Quartenylic :: Quartenylic (a.) Pertaining to, or designating, an acid of the acrylic acid series, metameric with crotonic acid, and obtained as a colorless liquid; -- so called from having four carbon atoms in the molecule. Called also isocrotonic acid..

Atomically :: Atomically (adv.) In an atomic manner; in accordance with the atomic philosophy.

Columbium :: Columbium (n.) A rare element of the vanadium group, first found in a variety of the mineral columbite occurring in Connecticut, probably at Haddam. Atomic weight 94.2. Symbol Cb or Nb. Now more commonly called niobium..

Erbium :: Erbium (n.) A rare metallic element associated with several other rare elements in the mineral gadolinite from Ytterby in Sweden. Symbol Er. Atomic weight 165.9. Its salts are rose-colored and give characteristic spectra. Its sesquioxide is called erbia.

Anatomize :: Anatomize (v. t.) To dissect; to cut in pieces, as an animal vegetable body, for the purpose of displaying or examining the structure and use of the several parts..

Tetratomic :: Tetratomic (a.) Having a valence of four; quadrivalent; tetravalent; sometimes, in a specific sense, having four hydroxyl groups, whether acid or basic..

Viatometer :: Viatometer (n.) A viameter.

Spray :: Spray (v. t.) An instrument for applying such a spray; an atomizer.

Anatomism :: Anatomism (n.) The doctrine that the anatomical structure explains all the phenomena of the organism or of animal life.

Linkage :: Linkage (n.) Manner of linking or of being linked; -- said of the union of atoms or radicals in the molecule.

Heptane :: Heptane (n.) Any one of several isometric hydrocarbons, C7H16, of the paraffin series (nine are possible, four are known); -- so called because the molecule has seven carbon atoms. Specifically, a colorless liquid, found as a constituent of petroleum, in the tar oil of cannel coal, etc..

Demonstrator :: Demonstrator (n.) A teacher of practical anatomy.

Clastic :: Clastic (a.) Pertaining to what may be taken apart; as, clastic anatomy (of models)..

Disulphide :: Disulphide (n.) A binary compound of sulphur containing two atoms of sulphur in each molecule; -- formerly called disulphuret. Cf. Bisulphide.

Ace :: Ace (n.) Hence: A very small quantity or degree; a particle; an atom; a jot.

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