camptonite: Meaning and Definition of

camp•ton•ite

Pronunciation: (kamp'tu-nīt"), [key]
— n.
  1. a lamprophyric rock occurring in dikes and composed of labradorite, pyroxene, sodic hornblende and olivine.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.