[pahy-roh-fos-fawr-ik, -for-, pahy-] /ˈpaɪ roʊ fɒsˈfɔr ɪk, -ˈfɒr-, ˌpaɪ-/
a crystalline, water-soluble powder, H 4 P 2 O 7 , formed by the union of one molecule of phosphorus pentoxide with two molecules of water.
a crystalline soluble solid acid formed by the reaction between one molecule of phosphorus pentoxide and two water molecules. Formula: H4P2O7 See also polyphosphoric acid
pyrophosphoric acid py·ro·phos·phor·ic acid (pī’rō-fŏs-fôr’ĭk)
A syrupy viscous liquid used as a catalyst, in organic chemical synthesis, and, in its salt forms, as medicines.
A viscous liquid used as a catalyst and in the manufacture of organic chemicals. Chemical formula: H4P2O7.
[pahy-roh-foh-tom-i-ter] /ˌpaɪ roʊ foʊˈtɒm ɪ tər/ noun, Physics. 1. a form of pyrometer that measures temperature by optical or photometric means. /ˌpaɪrəʊfəʊˈtɒmɪtə/ noun 1. a type of pyrometer in which the temperature of an incandescent body is determined by photometric measurement of the light it emits
[pahy-ruh-fil-ahyt, pahy-rof-uh-lahyt] /ˌpaɪ rəˈfɪl aɪt, paɪˈrɒf əˌlaɪt/ noun 1. Mineralogy. a phyllosilicate, AlSi 2 O 5 (OH), usually having a white or greenish color, and occurring in either foliated or compact masses, the latter variety being used like soapstone. /ˌpaɪrəʊˈfɪlaɪt/ noun 1. a white, silvery, or green micaceous mineral that consists of hydrated aluminium silicate […]
[pahy-roh-rey-see-mik, -sem-ik, -roh-ruh-, pahy-roh-] /ˈpaɪ roʊ reɪˈsi mɪk, -ˈsɛm ɪk, -roʊ rə-, ˌpaɪ roʊ-/ noun, Chemistry. 1. .
[pahy-roh-sis] /paɪˈroʊ sɪs/ noun, Pathology. 1. (def 1). /paɪˈrəʊsɪs/ noun 1. (pathol) a technical name for heartburn noun See acid reflux pyrosis py·ro·sis (pī-rō’sĭs) n. See heartburn.
[pahy-ruh-stat] /ˈpaɪ rəˌstæt/ noun 1. a thermostat for high temperatures. 2. a safety device that, when a fire breaks out in its vicinity, automatically causes a mechanism to sound a warning alarm. /ˈpaɪrəʊˌstæt/ noun 1. a device that activates an alarm or extinguisher in the event of a fire 2. a thermostat for use at […]