/ Dictionary / Index R radiochemical: Meaning and Definition of Find definitions for: ra•di•o•chem•i•cal Pronunciation: (rā"dē-ō-kem'i-kul), [key] — adj. Chem. pertaining to or involving radiochemistry. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. radiocesium radiochemistry Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language