[pahy-ruh-kem-i-kuh l] /ˌpaɪ rəˈkɛm ɪ kəl/
pertaining to or producing change at high temperatures.
of, concerned with, being, producing, or resulting from chemical changes at high temperatures
Relating to or designating chemical activity at elevated temperatures. Pyrochemical reactions are used, for example, to bring about the transmutation of certain transuranic elements.
[pahy-ruh-klawr, -klohr] /ˈpaɪ rəˌklɔr, -ˌkloʊr/ noun 1. a mineral, chiefly composed of niobates of the cerium metals, occurring in syenites in the form of brown crystals.
[pahy-ruh-klas-tik] /ˌpaɪ rəˈklæs tɪk/ adjective, Geology. 1. composed chiefly of fragments of volcanic origin, as agglomerate, tuff, and certain other rocks; volcaniclastic. /ˌpaɪrəʊˈklæstɪk/ adjective 1. (of rocks) formed from the solid fragments ejected during a volcanic eruption adj. 1887, from pyro- + clastic. pyroclastic (pī’rō-klās’tĭk) Composed chiefly of rock fragments of explosive origin, especially those […]
[pahy-ruh-kon-duhk-tiv-i-tee] /ˌpaɪ rəˌkɒn dʌkˈtɪv ɪ ti/ noun, Electricity. 1. brought about by the application of heat, especially in solids that are not conductors at normal temperatures. /ˌpaɪrəʊˌkɒndʌkˈtɪvɪtɪ/ noun 1. conductivity that can be induced in certain solids by heating them
[pahy-ruh-kris-tl-in, -ahyn, -een] /ˌpaɪ rəˈkrɪs tl ɪn, -ˌaɪn, -ˌin/ adjective, Petrography. 1. crystallized from a molten magma or highly heated solution.