/ Dictionary / Index D diopsimeter: Meaning and Definition of Find definitions for: di•op•sim•e•ter Pronunciation: (dī"up-sim'i-tur), [key] — n. Ophthalm. an instrument for measuring the field of vision. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. diopside dioptase Related Content Daily Word Quiz: jaundice Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language