/ Dictionary / Index R radioacoustics: Meaning and Definition of Find definitions for: ra•di•o•a•cous•tics Pronunciation: (r?"d?-?-u-k'stiks), [key] ? n. (used with a sing. v.) the science and technology of the production, transmission, and reproduction of sounds carried by radio waves. Random House Unabridged Dictionary, Copyright 1997, by Random House, Inc., on Infoplease. radio radioactinium Related Content Daily Word Quiz: abscond Analogy of the Day: Today?s Analogy Spelling Bee: Today?s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language