Pyrope, pī′rōp, n. a gem nearly allied to garnet, of a deep-red colour and translucent, generally occurring in roundish grains. [Gr. pyrōpos, fiery-eyed—pyr, pyros, fire, ōps, opos, the face.]
Pyrophanous, pī-rof′a-nus, adj. made transparent by heat.—n. Py′rophāne, an opal translucent while hot by melted wax. [Gr. pyr, fire, phainein, to show.]
Pyrophone, pī′rō-fōn, n. a musical instrument invented by Eugene Kastner (1873), in which the tones are produced by means of burning jets of hydrogen enclosed in graduated glass tubes. [Gr. pyr, fire, phōnē, sound.]
Pyrophorus, pī-rof′ō-rus, n. a substance which takes fire on exposure to air: a genus of elaterid beetles.—n. Py′rophōre, any composition which takes fire on exposure to air or water.—adjs. Pyrophor′ic, Pyroph′orous. [Gr. pyr, fire, pherein, to carry.]
Pyrophosphoric, pī-rō-fos-for′ik, adj. formed by heating phosphoric acid.
Pyrophotography, pī-rō-fō-tog′ra-fi, n. any photographic process in which heat is applied to fix the picture.
Pyroscope, pī′rō-skōp, n. an instrument for measuring the intensity of radiating heat. [Gr. pyr, pyros, fire, skopein, to view.]
Pyrosilver, pī-rō-sil′vėr, n. electroplated ware in which the silver is made to sink into the pores of the plated baser metal by the action of heat.
Pyrosis, pī-rō′sis, n. water-brash (q.v.). [Gr.,—pyr, fire.]
Pyrosoma, pī-rō-sō′ma, n. a genus of compound Tunicates, with brilliant phosphorescence, inhabiting the Mediterranean and the Atlantic—fire-flames. [Gr. pyr, fire, sōma, body.]