/ Dictionary / Index M Meganthropus*: Meaning and Definition of Find definitions for: Me•gan•thro•pus Pronunciation: (mu-gan'thru-pus, meg"an-thrō'pus), [key] — n. a proposed genus of extinct, late lower Pleistocene primates based on two large lower jaws found in Java, and believed to be either Australopithecine or human. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Megan's Law megaphone Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language