[pahy-ruh-met-l-ur-jee] /ˌpaɪ rəˈmɛt lˌɜr dʒi/
the process or technique of refining ores with heat so as to accelerate chemical reactions or to melt the metallic or nonmetallic content.
the branch of metallurgy involving processes performed at high temperatures, including sintering, roasting, smelting, casting, refining, alloying, and heat treatment
noun 1. (in a kiln) a ball of material that indicates by changing color that a certain temperature has been reached.
noun 1. (in a kiln) a triangular piece of material that indicates by bending or melting that a certain temperature has been reached.
[pahy-rom-i-ter] /paɪˈrɒm ɪ tər/ noun 1. an apparatus for measuring high temperatures that uses the radiation emitted by a hot body as a basis for measurement. /paɪˈrɒmɪtə/ noun 1. an instrument for measuring high temperatures, esp by measuring the brightness (optical pyrometer) or total quantity (radiation pyrometer) of the radiation produced by the source. Other […]
[pahy-ruh-mawr-fahyt] /ˌpaɪ rəˈmɔr faɪt/ noun 1. a mineral, lead chlorophosphate, Pb 5 P 3 O 1 2 Cl, occurring in crystalline and massive forms, and of a green, yellow, or brown color; green lead ore: a minor ore of lead. /ˌpaɪrəʊˈmɔːfaɪt/ noun 1. a green, yellow, brown, or grey secondary mineral that consists of lead […]