/ Dictionary / Index P picrite: Meaning and Definition of Find definitions for: pic•rite Pronunciation: (pik'rīt), [key] — n. a granular igneous rock composed chiefly of olivine and augite, but containing small amounts of feldspar. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. picric acid picrotoxin Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language