Breadcrumb Home > Dictionary > Index P pterygium: Meaning and Definition of Find definitions for: pte•ryg•i•um Pronunciation: (tu-rij'ē-um), [key] — pl. -ryg•i•ums, -ryg•i•a an abnormal triangular mass of thickened conjunctiva extending over the cornea and interfering with vision. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pterygium (Thesaurus) -pterous pterygote TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: odaysuiz Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language