/ Dictionary / Index I idioplasm: Meaning and Definition of Find definitions for: id•i•o•plasm Pronunciation: (id'ē-u-plaz"um), [key] — n. Biol. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. idiopathy idiosyncrasy 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