| CLINOPYROXENES | • clinopyroxenes n. Plural of clinopyroxene. • CLINOPYROXENE n. a member of the pyroxene group of minerals having a monoclinic crystal structure, such as augite, diopside, or jadeite. |
| MICROPYROMETER | • MICROPYROMETER n. a pyrometer for measuring the temperature of very small objects. |
| ORTHOPYROXENES | • orthopyroxenes n. Plural of orthopyroxene. • ORTHOPYROXENE n. a member of the pyroxene group of minerals having an orthorhombic crystal structure, such as enstatite and hypersthene. |
| PYROCHEMICALLY | • pyrochemically adv. In a pyrochemical way; by means of pyrochemistry. • PYROCHEMICAL adv. relating to chemical changes at high temperatures. |
| PYROGENICITIES | • pyrogenicities n. Plural of pyrogenicity. • PYROGENICITY n. the state of being pyrogenic. |
| PYROMETALLURGY | • pyrometallurgy n. Any process that uses high temperatures to transform either metals or their ores. • PYROMETALLURGY adj. chemical metallurgy depending on heat action (as roasting and smelting). |
| PYROMETRICALLY | • pyrometrically adv. By means of pyrometry. • PYROMETRICAL adv. relating to pyrometry, the art of measuring degrees of heat, or the expansion of bodies by heat, also PYROMETRIC. |
| PYRONINOPHILIC | • pyroninophilic adj. Readily stained by pyronine. • PYRONINOPHILIC adj. having an affinity for pyronine, any of several xanthene dyes. |
| PYROPHOSPHATES | • pyrophosphates n. Plural of pyrophosphate. • PYROPHOSPHATE n. a salt or ester of pyrophosphoric acid. |
| PYROPHOSPHORIC | • pyrophosphoric adj. Of, or relating to pyrophosphoric acid or its derivatives. • PYROPHOSPHORIC adj. as in pyrophosphoric acid, a type of acid. |
| PYROPHOTOGRAPH | • PYROPHOTOGRAPH n. a burnt-in photograph, e.g. on glass or porcelain. |
| PYROPHOTOMETER | • PYROPHOTOMETER n. a type of pyrometer in which the temperature of an incandescent body is determined by photometric measurement of the light it emits. |
| PYROPHOTOMETRY | • PYROPHOTOMETRY n. the measurement of the temperature of an incandescent body by photometric measurement of the light it emits. |
| PYROTECHNICIAN | • pyrotechnician n. A person who designs or organises pyrotechnics. • PYROTECHNICIAN n. one who makes fireworks. |
| XYLOPYROGRAPHY | • xylopyrography n. (Art) The art of burning pictures onto wood. • XYLOPYROGRAPHY n. engraving designs on wood with hot poker. |