/ Dictionary / Index I inradius: Meaning and Definition of Find definitions for: in•ra•di•us Pronunciation: (in'rā"dē-us), [key] — pl. -di•i -di•us•es. the radius of the circle inscribed in a triangle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. inquisitress in re Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language