/ Dictionary / Index C chromosome number: Meaning and Definition of Find definitions for: chro'mosome num"ber Pronunciation: [key] — Genetics. Genetics. the characteristic number of chromosomes contained in the cell nucleus of a given species. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. chromosome chromosphere Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language