Pronunciation: (kō-sē'kunt, -kant), [key]
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.