Dictionary
co•se•cant
Pronunciation: (kō-sē'kunt, -kant), [key]—
n. Trigonom.
1. (in a right triangle) the ratio of the hypotenuse to the side opposite a given angle.
2. the secant of the complement, or the reciprocal of the sine, of a given angle or arc.
Abbr.: csc
Also,cosec.Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.