The Collaborative International Dictionary of English v.0.48:

Cremation \Cre*ma"tion\ (kr?-m?"sh?n), n. [L. crematio.]
   A burning; esp., the act or practice of cremating the dead.
   [1913 Webster]

         Without cremation . . . of their bodies. --Sir T.
                                                  Browne.
   [1913 Webster]

WordNet (r) 3.0 (2006):

cremation
    n 1: the incineration of a dead body

Moby Thesaurus II by Grady Ward, 1.0:

37 Moby Thesaurus words for "cremation":
   blazing, blistering, branding, burning, calcination, carbonization,
   cauterization, cautery, cineration, combustion, concremation,
   cracking, cupellation, deflagration, destructive distillation,
   distillation, distilling, flaming, funeral pile, incineration,
   oxidation, oxidization, parching, pyre, pyrolysis,
   reduction to ashes, refining, scorching, scorification, searing,
   self-immolation, singeing, smelting, suttee, the stake,
   thermogenesis, vesication