coset

n (mathematics 数) set that can be added to an existing set to produce a more inclusive larger set 傍系; 陪集.

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, cosecant, cosh, cosily, cosine, cosiness, cosmetic, cosmetic surgery, cosmetically, cosmetician, cosmetics, cosmic, cosmic being, cosmic dust, cosmic rays, cosmogony, cosmologist, cosmology, cosmonaut, cosmopolitan, cosmopolitanism, cosmos,