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Meaning of pterygium

pte•ryg•i•um

Pronunciation: (tu-rij'ē-um), [key]
— pl. -ryg•i•ums, -ryg•i•a
  1. an abnormal triangular mass of thickened conjunctiva extending over the cornea and interfering with vision.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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