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Pyrotartaric :: Pyrotartaric (a.) Pertaining to, or designating, an acid obtained as a white crystalline substance by the distillation of tartaric acid..

Pyrotechny :: Pyrotechny (n.) Same as Pyrotechnics.

Andesite :: Andesite (n.) An eruptive rock allied to trachyte, consisting essentially of a triclinic feldspar, with pyroxene, hornblende, or hypersthene..

Oxyphenic :: Oxyphenic (a.) Pertaining to, or designating, the phenol formerly called oxyphenic acid, and now oxyphenol and pyrocatechin. See Pyrocatechin..

Pyrocatechin :: Pyrocatechin (n.) A white crystalline substance, C6H4(OH)2, of the phenol series, found in various plants; -- so called because first obtained by distillation of gum catechu. Called also catechol, oxyphenol. etc..

Pyrometrical :: Pyrometrical (a.) Pertaining to, or obtained by, the pyrometer; as, pyrometrical instruments; pyrometrical measurements..

Pyrography :: Pyrography (n.) A process of printing, ornamenting, or carving, by burning with heated instruments..

Pyroligneous :: Pyroligneous (a.) Alt. of Pyroligni.

Pyrometer :: Pyrometer (n.) An instrument for measuring degrees of heat above those indicated by the mercurial thermometer.

Salite :: Salite (n.) A massive lamellar variety of pyroxene, of a dingy green color..

Pyroxene :: Pyroxene (n.) A common mineral occurring in monoclinic crystals, with a prismatic angle of nearly 90�, and also in massive forms which are often laminated. It varies in color from white to dark green and black, and includes many varieties differing in color and composition, as diopside, malacolite, salite, coccolite, augite, etc. They are all silicates of lime and magnesia with sometimes alumina and iron. Pyroxene is an essential constituent of many rocks, especially basic igneous rocks, as basa

Pyrotechnian :: Pyrotechnian (n.) A pyrotechnist.

Pyrolusite :: Pyrolusite (n.) Manganese dioxide, a mineral of an iron-black or dark steel-gray color and metallic luster, usually soft. Pyrolusite parts with its oxygen at a red heat, and is extensively used in discharging the brown and green tints of glass (whence its name)..

Pyrotechnics :: Pyrotechnics (n.) The art of making fireworks; the manufacture and use of fireworks; pyrotechny.

Protocatechuic :: Protocatechuic (a.) Pertaining to, derived from, or designating, an organic acid which is obtained as a white crystalline substance from catechin, asafetida, oil of cloves, etc., and by distillation itself yields pyrocatechin..

Pyrolithic :: Pyrolithic (a.) Same as Pyrouric, or Cyanuric..

Temperature :: Temperature (n.) Condition with respect to heat or cold, especially as indicated by the sensation produced, or by the thermometer or pyrometer; degree of heat or cold; as, the temperature of the air; high temperature; low temperature; temperature of freezing or of boiling..

Pyrophosphate :: Pyrophosphate (n.) A salt of pyrophosphoric acid.

Pyrosome :: Pyrosome (n.) Any compound ascidian of the genus Pyrosoma. The pyrosomes form large hollow cylinders, sometimes two or three feet long, which swim at the surface of the sea and are very phosphorescent..

Pyrophane :: Pyrophane (n.) A mineral which is opaque in its natural state, but is said to change its color and become transparent by heat..

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