/ Dictionary / Index A astigmatizer: Meaning and Definition of Find definitions for: a•stig•ma•tiz•er Pronunciation: (u-stig'mu-tī"zur), [key] — n. Optics. a cylindrical lens used in a rangefinder to draw out the point image of a point source into a line. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. astigmatism astigmatoscope Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language