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[pahy-ruh-klawr, -klohr] /ˈpaɪ rəˌklɔr, -ˌkloʊr/

a mineral, chiefly composed of niobates of the cerium metals, occurring in syenites in the form of brown crystals.


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  • Pyroclastic

    [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 […]

  • Pyroconductivity

    [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

  • Pyrocrystalline

    [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.

  • Pyroelectric

    [pahy-roh-i-lek-trik] /ˌpaɪ roʊ ɪˈlɛk trɪk/ adjective 1. pertaining to, subject to, or manifesting . noun 2. a substance manifesting . /ˌpaɪrəʊɪˈlɛktrɪk/ adjective 1. of, concerned with, or exhibiting pyroelectricity noun 2. a pyroelectric substance

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