/ Dictionary / Index P particeps criminis: Meaning and Definition of Find definitions for: par•ti•ceps cri•mi•nis Pronunciation: (pär'tu-seps" krim'u-nis), [key] — Law. Law. an accomplice in a crime. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. partible participable 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