'Coversed sine' definitions:

Definition of 'Coversed sine'

From: GCIDE

Coversed sine \Co*versed" sine\ (k?-v?rst" s?n`). [Co- (=co- in co- sine) + versed sine.] (Geom.) The versed sine of the complement of an arc or angle. See Illust. of Functions. [1913 Webster]