The Collaborative International Dictionary
Occision
Occision \Oc*ci"sion\, n. [L. occisio, fr. occidere, occisium,
to cut down, to kill; ob (see Ob-) + caedere to cut.]
A killing; the act of killing. [Obs.]
--Sir M. Hale.
Wiktionary
occision
n. A killing; the act of killing.