/ Dictionary / Index D direct-vision spectroscope: Meaning and Definition of Find definitions for: direct'-vi'sion spec"troscope Pronunciation: [key] — Optics. Optics. a simple spectroscope consisting of a collimating lens and an Amici prism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. direct-vision prism Diredawa Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language