cosecant

n (abbr 缩写 cosec) (mathematics 数) in a right-angled triangle, the ratio of the length of the hypotenuse to that of the opposite side 余割.

corruptible, corruption, corruptly, corruptness, corsage, corsair, corselet (also corslet), corset, cortege (also cortege), cortex, cortical, cortisol, cortisone, corundum, coruscate, coruscation, corvette, cos, cos (also cos), cosec, coset, cosh, cosily, cosine, cosiness, cosmetic, cosmetic surgery, cosmetically, cosmetician, cosmetics, cosmic, cosmic being, cosmic dust, cosmic rays, cosmogony, cosmologist, cosmology, cosmonaut, cosmopolitan, cosmopolitanism,