suppŏsĭtĭo (subp-), ōnis, f. [suppono], a putting or setting under. *
I In gen.: ovorum, Col. 8, 5, 9.—
II In partic., a putting in the place of another, substitution (of a child): pueri, Plaut. Capt. 1033: puellae, id. Cist. 152: suppositionem facere, id. ib. 144; id. Truc. 437.