/ Dictionary / Index R radiochemistry: Meaning and Definition of Find definitions for: ra•di•o•chem•is•try Pronunciation: (rā"dē-ō-kem'u-strē), [key] — n. the chemical study of radioactive elements, both natural and artificial, and their use in the study of chemical processes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: radiochemistry (Thesaurus) radiochemical radiochromatography Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language