First Known Use: 1657
Dictionary
pterygium
noun pte·ryg·i·um \te-ˈri-jē-əm\
plural pte·ryg·ia \-jē-ə\ also -iums
Definition of PTERYGIUM
: a fleshy mass of thickened conjunctiva that grows over part of the cornea usually from the inner side of the eyeball and causes a disturbance of vision
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Origin of PTERYGIUM
New Latin, from Greek pterygion little wing, from pteryx
Medical Dictionary
pterygium
noun pte·ryg·i·um \te-ˈrij-ē-əm\
plural -iums or -ia \-ē-ə\
Medical Definition of PTERYGIUM
1
: a triangular fleshy mass of thickened conjunctiva occurring usually at the inner side of the eyeball, covering part of the cornea, and causing a disturbance of vision
2
: a forward growth of the cuticle over the nail
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