/ Dictionary / Index C clonic: Meaning and Definition of Find definitions for: clon•ic Pronunciation: (klon'ik, klō'nik), [key] — adj. Pathol. of or relating to clonus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: clonic (Thesaurus) clone clonic spasm Related Content Daily Word Quiz: alacrity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language