/ Dictionary / Index D diplosis: Meaning and Definition of Find definitions for: di•plo•sis Pronunciation: (di-plō'sis), [key] — n. Cell Biol. the doubling of the chromosome number by the union of the haploid sets in the union of gametes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. diplopod diplostemonous Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language