| 释义 |
‖ pterygium|ptəˈrɪdʒɪəm|
[L., a. Gr. πτερύγιον little wing, fin, dim. of πτέρυξ wing.]
1. Anat. (See quot.) ? Obs.
1684tr. Blancard's Phys. Dict., Pterygium, is the Wing or round Rising of the Nose or Eye, or the Process of the Bone Sphenoides which is like a Wing...Also the Nymphæ of a Womans secret Parts.
2. Path.
a. A diseased condition of the conjunctiva of the eye: see quots.
1657Physical Dict., Pterygium, or haw in the eyes called unguis. 1875H. Walton Dis. Eye 144 Pterygium generally grows as a flat triangularly-shaped tumour on the ocular conjunctiva, at the inner corner of the eye. 1884G. Turner Samoa xi. 137 Connected with diseases of the eye, pterygium is common.
b. A growth of the epidermis over the nails.
1899J. Hutchinson in Archives of Surg. X. No. 38. 147 The nail-fold over the lunula is prolonged forwards, over the bed, as a fan-shaped, fleshy pterygium.
3. Entom. (See quot.)
1826Kirby & Sp. Entomol. III. 381 Pterygium.., in under-wings this is a small wing-like appendage, fixed at the base of the wing in some Lepidoptera.
4. Bot. Term applied to petals and other appendages when shaped like wings.
1895in Syd. Soc. Lex. |