/ Dictionary / Index A astigmatoscope: Meaning and Definition of Find definitions for: as•tig•mat•o•scope Pronunciation: (as"tig-mat'u-skōp"), [key] — n. Ophthalm. an instrument for determining the presence and severity of astigmatism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. astigmatizer astigmatoscopy Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language