pteryg1um

[Greek pterygion, dim. from pteryx (gen it. pterygos )=a wing.] 1. Bot .: Any wing-like membranous expansion of a seed. 2. Pathol .: A film on the eye. Popularly called a web. 3. Surg .: A delicate pointed instrument for removing a web from the eye. [2.] IMG:content-1700.png:[blocks in formation]