PTERYGIUM

pterygium

(noun) 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

Source: WordNet® 3.1

Etymology

Noun

pterygium (plural pterygiums or pterygia)

(medicine) An abnormal mass of tissue in the corner of the eye that obstructs vision

(anatomy) A generalized limb of a vertebrate.

Source: Wiktionary

Pte*ryg"i*um, n.; pl. E. Pterygiums, L. Pterygia. Etym: [NL., fr. Gr. (Med.)

Definition: A superficial growth of vascular tissue radiating in a fanlike manner from the cornea over the surface of the eye.

Source: Webster’s Unabridged Dictionary 1913 Edition

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