from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A substance, such as a petroleum distillate, that is used as a catalyst, as in spreading an intentionally set fire.

from The Century Dictionary.

  • That accelerates; accelerating.
  • noun That which quickens; specifically, one of the nerves stimulation of which causes increased rapidity of the heart's action.

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

  • noun chemistry Any substance that can bond, mix, or disturb another substance and cause an increase in the speed of a natural or artificial chemical process.
  • noun A substance that accelerates the development of a fire; especially some petroleum product used to spread an act of arson
  • noun chemistry A substance used to catalyze the vulcanization of rubber


Sorry, no etymologies found.


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