/ Dictionary / Index S spectroradiometer: Meaning and Definition of Find definitions for: spec•tro•ra•di•om•e•ter Pronunciation: (spek"trō-rā"dē-om'i-tur), [key] — n. Optics. an instrument for determining the radiant-energy distribution in a spectrum, combining the functions of a spectroscope with those of a radiometer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. spectropolariscope spectroscope Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language