occīsĭo, ōnis, f. [1. occīdo],
a massacre , slaughter , murder (class. but rare, except in eccl. Lat.; sometimes interchanged in the MSS. with occidio): si caedes et occisio facta non erit, Cic. Caecin. 14, 41: parentis, id. Inv. 1, 26, 37; Ap. Met. 6, 26, 6; Aur. Vict. Vir. Ill. 14: aestimati sumus sicut oves occisionis, Vulg. Psa. 43, 21: gladium ad occisionem, id. Jer. 15, 3.