Lewis Short
hĕcătombē | hĕcătombĭon, ii (noun F.n) = ἑκατόμβη:
* A great sacrifice of a hundred oxen, a hecatomb (ante- and post-class.): facere hecatomben, Varr. ap. Non. 131, 19; Juv. 12, 101 al.—In plur.: celebratis hecatombis, Treb. Gall. 9.—Dim. , , , Sid. Carm. 9, 205.
Charlton T. Lewis, Charles Short, A Latin Dictionary