| NOUN | body | pterygium | either of two thickened triangular layers of conjunctiva extending from the nasal edge of the eye to the cornea |
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| Meaning | Either of two thickened triangular layers of conjunctiva extending from the nasal edge of the eye to the cornea; it arises from irritation of the pinguecula. | |
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| Broader | conjunctiva | A transparent lubricating mucous membrane that covers the eyeball and the under surface of the eyelid |
| Spanish | pterigium | |
| Catalan | pterigi | |
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