Definition of "conjunctiva" noun plural conjunctivas or conjunctivae
(anatomy) A clear mucous membrane that lines the inner surface of the eyelid and the exposed surface of the eyeball or sclera . quotations examples
Quotations There is a third inner eyelid , highly developed and of beautiful mechanism : this is the nictitating membrane , or "winker " (nictito , I wink ), a delicate , elastic , translucent , pearly -white fold of the conjunctiva While the other lids move vertically and have a horizontal commissure , the winker sweeps horizontally or obliquely across the ball , from the side next the beak to the opposite .
1884, Elliott Coues, “§ 4.—An Introduction to the Anatomy of Birds.”, in Key to North American Birds. […], 2nd edition, Boston, Mass.: Estes and Lauriat, part II (General Ornithology), page 180