The Collaborative International Dictionary of English v.0.48:

Incinerate \In*cin"er*ate\, v. t. [imp. & p. p. Incinerated;
   p. pr. & vb. n. Incinerating.]
   To burn to ashes; to consume by fire; to burn. --Bacon.
   [1913 Webster]

         It is the fire only that incinerates bodies. --Boyle.
   [1913 Webster]