/ Dictionary / Index R radiomicrometer: Meaning and Definition of Find definitions for: ra•di•o•mi•crom•e•ter Pronunciation: (rā"dē-ō-mī-krom'i-tur), [key] — n. an instrument for measuring small amounts of radiant energy, consisting of a sensitive thermocouple connected to a galvanometer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: radiomicrometer (Thesaurus) radiometric dating radionuclide Related Content Daily Word Quiz: rarefied Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language