/ Dictionary / Index K karyosome: Meaning and Definition of Find definitions for: kar•y•o•some Pronunciation: (kar'ē-u-sōm"), [key] — n. Cell Biol. Also calledany of several masses of chromatin in the reticulum of a cell nucleus. a chromosome. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. karyoplasm karyotype Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language