[pahy-ruh-sel-yuh-lohs] /ˌpaɪ rəˈsɛl yəˌloʊs/
[pahy-ruh-kem-i-kuh l] /ˌpaɪ rəˈkɛm ɪ kəl/ adjective 1. pertaining to or producing change at high temperatures. /ˌpaɪrəʊˈkɛmɪkəl/ adjective 1. of, concerned with, being, producing, or resulting from chemical changes at high temperatures pyrochemical (pī’rō-kěm’ĭ-kəl) Relating to or designating chemical activity at elevated temperatures. Pyrochemical reactions are used, for example, to bring about the transmutation of […]
[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