dĕcĭmātĭo, ōnis, f. [decimo], the taking of a tenth.
I A tithing : omnis, Vulg. Tobiae, 1, 7.—
II A selecting by lot of every tenth man for punishment, decimation , Capitol. Macr. 12.—
III A tenth : adhuc in ea decimatio, Vulg. Isa. 6, 13.