The Collaborative International Dictionary
Pterygia
Pterygium \Pte*ryg"i*um\, n.; pl. E. Pterygiums, L. Pterygia. [NL., fr. Gr. ?, properly a dim, akin to ? a feather.] (Med.) A superficial growth of vascular tissue radiating in a fanlike manner from the cornea over the surface of the eye.
Wiktionary
pterygia
n. (plural of pterygium English)
WordNet
pterygium
n. a thickened triangular layer of conjunctiva extending from the nasal edge of the eye to the cornea; pterygia arise from irritation of the pinguecula
[also: pterygia (pl)]
pterygia
See pterygium
Wikipedia
Pterygia (gastropod)
Pterygia is a genus of sea snails, marine gastropod mollusks in the family Mitridae.