The Collaborative International Dictionary of English v.0.48:

Deicide \De"i*cide\, n. [L. deicida a deicide (in sense 2); deus
   god + c[ae]dere to cut, kill: cf. F. d['e]icide.]
   1. The act of killing a being of a divine nature;
      particularly, the putting to death of Jesus Christ. [R.]
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            Earth profaned, yet blessed, with deicide. --Prior.
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   2. One concerned in putting Christ to death.
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