Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun pterygium

1 sense of pterygium

Sense 1
pterygium -- (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)
       => conjunctiva -- (a transparent lubricating mucous membrane that covers the eyeball and the under surface of the eyelid)