/ Dictionary / Index R radicular: Meaning and Definition of Find definitions for: ra•dic•u•lar Pronunciation: (ra-dik'yu-lur), [key] — adj. of or pertaining to a radicle or root. of, pertaining to, or involving a radicle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. radicle radiculitis 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