pyrophoric

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adjective py·ro·phor·ic \ˌpī-rə-ˈfȯr-ik, -ˈfär-\

Definition of pyrophoric

  1. 1 :  igniting spontaneously

  2. 2 :  emitting sparks when scratched or struck especially with steel

Origin and Etymology of pyrophoric

New Latin pyrophorus, from Greek pyrophoros fire-bearing, from pyr- + -phoros carrying — more at -phore


First Known Use: 1788


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the point at which something begins

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