The Collaborative International Dictionary of English v.0.48:

Cremate \Cre"mate\ (kr?"m?t or kr?-m?t"), v. t. [L. crematus, p.
   p. of cremare to burn; cf. Skr. cr? to cook.]
   To burn; to reduce to ashes by the action of fire, either
   directly or in an oven or retort; to incremate or incinerate;
   as, to cremate a corpse, instead of burying it.
   [1913 Webster]

WordNet (r) 3.0 (2006):

cremate
    v 1: reduce to ashes; "Cremate a corpse"