/ Dictionary / Index P prehominid: Meaning and Definition of Find definitions for: pre•hom•i•nid Pronunciation: (prē-hom'u-nid), [key] — n. any of the extinct humanlike primates classified in the former family Prehominidae. any extinct form that is thought to be an ancestor of the hominids. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. prehnite prehuman 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