cosecant
(of an angle) a trigonometric function that in a right-angled triangle is the ratio of the length of the hypotenuse to that of the opposite side; the reciprocal of sine
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
cosecant
[kō′sē‚kant] (mathematics)
The reciprocal of the sine. Denoted csc.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.