/ Dictionary / Index E euchromatin: Meaning and Definition of Find definitions for: eu•chro•ma•tin Pronunciation: (y-krō'mu-tin), [key] — n. Genetics. the part of a chromosome that condenses maximally during metaphase and contains most of the genetically active material. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. euchred euchromosome Related Content Daily Word Quiz: torrid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language