Pyrophoric
{ Pyr′o‐phor″ic (?), Py‐roph″o‐rous (?), } a. [Pyro- + Gr. φέρειν to bear.] Light-producing; of or pertaining to pyrophorus.Pyrophoric iron(Chem.), finely reduced iron, which ig...
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Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.
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Pyrophorus
‖Py‐roph″o‐rus (?), n. [NL. See Pyrophorous.] (Old Chem.) Any one of several substances or mixtures which phosphoresce or ignite spontaneously on exposure to air, as a heated mi...
Pyrophosphate
Pyr″o‐phos″phate (?), n.(Chem.) A salt of pyrophosphoric acid.
Pyrophosphoric
Pyr′o‐phos‐phor″ic (?), a. [Pyro- + phosphoric.] (Chem.) Pertaining to, or designating, an acid, H4P2O7, which is obtained as a white crystalline substance. Its salts are obtain...
Pyrophyllite
Py‐roph″yl‐lite (?), n. [Pyro- + Gr. � leaf.] (Min.) A mineral, usually of a white or greenish color and pearly luster, consisting chiefly of the hydrous silicate of alumina.
Pyroscope
Pyr″o‐scope (?), n. [Pyro- + -scope: cf. F. pyroscope.] (Physics) An instrument for measuring the intensity of heat radiating from a fire, or the cooling influence of bodies. It...
Pyrosis
‖Py‐ro″sis (?), n.(Med.) See Water brash, under Brash.
Pyrosmalite
Py‐ros″ma‐lite (?), n. [Pyro- + Gr. � odor + -like.] (Min.) A mineral, usually of a pale brown or of a gray or grayish green color, consisting chiefly of the hydrous silicate of...
Pyrosome
Pyr″o‐some (?), n. [Pyro- + -some body.] (Zoöl.) Any compound ascidian of the genus Pyrosoma. The pyrosomes form large hollow cylinders, sometimes two or three feet long, which ...
Pyrosulphate
Pyr′o‐sul″phate (?), n.(Chem.) A salt of pyrosulphuric acid.
Pyrosulphuric
Pyr′o‐sul‐phu″ric (?), a. [Pyro- + -sulphuric.] (Chem.) Pertaining to, or designating, an acid called also disulphuricacid) obtained by distillation of certain sulphates, as a c...
Pyrotartaric
Pyr′o‐tar‐tar″ic (?), a. [Pyro- + tartaric.] (Chem.) Pertaining to, or designating, an acid obtained as a white crystalline substance by the distillation of tartaric acid.
Pyrotartrate
Pyr′o‐tar″trate (?), n.(Chem.) A salt of pyrotartaric acid.
Pyrotechnian
Pyr′o‐tech″ni‐an (?), n. A pyrotechnist.
Pyrotechnic
{ Pyr′o‐tech″nic (?), Pyr′o‐tech″nic‐al (?), } a. [Pyro- + technic, technical: cf. F. pyrotechnique. See Fire, Technical.] Of or pertaining to fireworks, or the art of forming t...
Pyrotechnician
Pyr′o‐tech‐ni″cian (?), n. A pyrotechnist.
Pyrotechnics
Pyr′o‐tech″nics (?), n. The art of making fireworks; the manufacture and use of fireworks; pyrotechny.
Pyrotechnist
Pyr′o‐tech″nist (?), n. One skilled in pyrotechny; one who manufactures fireworks. Steevens.
Pyrotechny
Pyr′o‐tech′ny (?), n. [Cf. F. pyrotechnie.] 1. The use and application of fire in science and the arts. Sir M. Hale.2. Same as Pyrotechnics.
Pyrothonide
Py‐roth″o‐nide (?), n. [Pyro- + Gr. � linen.] (Med.) A kind of empyreumatic oil produced by the combustion of textures of hemp, linen, or cotton in a copper vessel, — formerly u...
Pyrotic
Py‐rot″ic (?), a. [Gr. �, fr. � to burn, fr. �, �, fire: cf. F. pyrotique.] Caustic. See Caustic. — n.(Med.) A caustic medicine.
Pyrotritartaric
Pyr′o‐tri′tar‐tar″ic (?), a. [Pyro- + tri- + tartaric.] (Chem.) Designating an acid which is more commonly called uric acid.
Pyrotungstic
Pyr′o‐tung″stic (?), a.(Chem.) Polytungstic. See Metatungstic.
Pyroüric
Pyr′o‐ü″ric (?), a. [Pyro- + uric.] (Old Chem.) Pertaining to, or designating, an acid now called cyanuric acid. See Cyanuric.
Pyrovanadic
Pyr′o‐va‐nad″ic (?), a. [Pyro- + vanadic.] (Chem.) Pertaining to, or designating, an acid of vanadium, analogous to pyrophosphoric acid.
Pyroxanthin
Pyr′o‐xan″thin (?), n. [Pyro- + Gr. � yellow.] (Chem.) A yellow crystalline hydrocardon extracted from crude wood spirit; — called also eblanin.
Pyroxene
Pyr″ox‐ene (?), n. [F. pyroxène, from Gr. � fire + � a stranger; — so called because it was supposed to the be a stranger, or of rare occurrence, in igneous rocks,] (Min.) A com...