pterygium Hear it!

pterygium definition

pteryg·ium (tə rij′ē əm)

noun pl. pterygiums -·iums or pterygia -·ia (-ə)

an abnormal, triangular mass of mucous membrane growing over the human cornea from the inner corner of the eye

Etymology: ModL < Gr pterygion, dim. of pteryx, wing, akin to pteron, feather

Related Forms:

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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