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pyrophoric

[pahy-ruh-fawr-ik, -for-] /ˌpaɪ rəˈfɔr ɪk, -ˈfɒr-/
adjective, Chemistry
1.
capable of igniting spontaneously in air.
Origin of pyrophoric
1780-1790
1780-90; < Greek pyrophór(os) fire-bearing (see pyro-, -phorous) + -ic
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for pyrophoric

pyrophoric

/ˌpaɪrəʊˈfɒrɪk/
adjective
1.
(of a chemical) igniting spontaneously on contact with air
2.
(of an alloy) producing sparks when struck or scraped: lighter flints are made of pyrophoric alloy
Word Origin
C19: from New Latin pyrophorus, from Greek purophoros fire-bearing, from pur fire + pherein to bear
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for pyrophoric
adj.

1779, from Modern Latin pyrophorus, literally "fire-bearing," from Greek pyrophoros, from pyro- (see pyro-) + phoros "bearer," from pherein "to carry" (see infer). Related: Pyrophorous; pyrophorus.

Online Etymology Dictionary, © 2010 Douglas Harper
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