/ Dictionary / Index R radiocast: Meaning and Definition of Find definitions for: ra•di•o•cast Pronunciation: (rā'dē-ō-kast", -käst"), [key] — n., v., -cast -cast•ed, -cast•ing. —n. a radiobroadcast. —v.t., v.i. to broadcast via radio. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. radiocarbon dating radiocesium Related Content Daily Word Quiz: modify Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language