Definitions

from The Century Dictionary.

  • noun A substance which takes fire on exposure to air.
  • noun [capitalized] A notable genus of elaterid beetles, comprising nearly a hundred species, confined to tropical and subtropical America, and containing the most brilliant forms of luminous insects.
  • noun [capitalized] A genus of arachnidans.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Old Chem.) Any one of several substances or mixtures which phosphoresce or ignite spontaneously on exposure to air, as a heated mixture of alum, potash, and charcoal, or a mixture of charcoal and finely divided lead.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun a substance capable of taking fire spontaneously on exposure to the air, especially in a finely divided state

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun tropical click beetles

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Ancient Greek πῦρ (pyr, "fire") + φέρω (pherō, "to bear").

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