cosecant(n = noun.linkdef) cosec - ratio of the hypotenuse to the opposite side of a right-angled triangle;
is a kind of circular function, trigonometric function
The secant of the complement of an arc or angle. See Illust. of Functions. [1913 Webster]
cosecant, n. Math. the ratio of the hypotenuse (in a right-angled triangle) to the side opposite an acute angle; the reciprocal of sine.
Etymology:
mod.L cosecans and F cos{eacute}cant (as CO-, SECANT)