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Nondecane :: Nondecane (n.) A hydrocarbon of the paraffin series, a white waxy substance, C19H40; -- so called from the number of carbon atoms in the molecule..

Rectum :: Rectum (n.) The terminal part of the large intestine; -- so named because supposed by the old anatomists to be straight. See Illust. under Digestive.

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..

Disulphuric :: Disulphuric (a.) Applied to an acid having in each molecule two atoms of sulphur in the higher state of oxidation.

Hexeikosane :: Hexeikosane (n.) A hydrocarbon, C26H54, resembling paraffine; -- so called because each molecule has twenty-six atoms of carbon..

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

Poly- :: Poly- (a.) A combining form or prefix from Gr. poly`s, many; as, polygon, a figure of many angles; polyatomic, having many atoms; polychord, polyconic..

Thallium :: Thallium (n.) A rare metallic element of the aluminium group found in some minerals, as certain pyrites, and also in the lead-chamber deposit in the manufacture of sulphuric acid. It is isolated as a heavy, soft, bluish white metal, easily oxidized in moist air, but preserved by keeping under water. Symbol Tl. Atomic weight 203.7..

Boron :: Boron (n.) A nonmetallic element occurring abundantly in borax. It is reduced with difficulty to the free state, when it can be obtained in several different forms; viz., as a substance of a deep olive color, in a semimetallic form, and in colorless quadratic crystals similar to the diamond in hardness and other properties. It occurs in nature also in boracite, datolite, tourmaline, and some other minerals. Atomic weight 10.9. Symbol B..

Palato- :: Palato- () A combining form used in anatomy to indicate relation to, or connection with, the palate; as in palatolingual..

Quartane :: Quartane (n.) Butane, each molecule of which has four carbon atoms..

Atomy :: Atomy (n.) An atom; a mite; a pigmy.

Manganese :: Manganese (n.) An element obtained by reduction of its oxide, as a hard, grayish white metal, fusible with difficulty, but easily oxidized. Its ores occur abundantly in nature as the minerals pyrolusite, manganite, etc. Symbol Mn. Atomic weight 54.8..

Polyiodide :: Polyiodide (n.) A iodide having more than one atom of iodine in the molecule.

Scandium :: Scandium (n.) A rare metallic element of the boron group, whose existence was predicted under the provisional name ekaboron by means of the periodic law, and subsequently discovered by spectrum analysis in certain rare Scandinavian minerals (euxenite and gadolinite). It has not yet been isolated. Symbol Sc. Atomic weight 44..

Hematoma :: Hematoma (n.) A circumscribed swelling produced by an effusion of blood beneath the skin.

Nitrol :: Nitrol (n.) Any one of a series of hydrocarbons containing the nitro and the nitroso or isonitroso group united to the same carbon atom.

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

Viameter :: Viameter (n.) An odometer; -- called also viatometer.

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

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