9 letters · 17 points in Scrabble
noun either of two thickened triangular layers of conjunctiva extending from the nasal edge of the eye to the cornea; it arises from irritation of the pinguecula
originFrom Ancient Greek πτερύγιον (pterúgion), diminutive of πτέρυξ (ptérux, “wing”). By surface analysis, pteryg- + -ium.
Etymology from Wiktionary, CC BY-SA 3.0