Source : Webster's Revised Unabridged Dictionary (1913)

Immolation \Im`mo*la"tion\, n. [L. immolatio: cf. F.
   immolation.]
   1. The act of immolating, or the state of being immolated, or
      sacrificed. --Sir. T. Browne.

   2. That which is immolated; a sacrifice.

Source : WordNet®

immolation
     n : killing or offering as a sacrifice