alternātīo, ōnis, f. [alterno], an interchange, an alternation (post-class.).
I In gen.: per vices successio, Paul. ex Fest. p. 7 Müll.; Macr. S. 7, 5: pedes incertis alternationibus commovere, Ap. Met. 10, 10, 4.—
II Esp., t. t. in the jurists, an alternative , this or that , Dig. 47, 10, 7; 13, 4, 2; 11, 3, 9.