Origin: 1525–35; < LL illātiōn- (s. of illātiō) a carrying in, equiv. to L illāt(us) suppletive ptp. of inferre to bring in, bear in (il-il-1+ lātus brought, earlier *tlātus;see tolerate) + -iōn--ion
A conclusion drawn; a deduction. Also called illative.
[Late Latin illātiō, illātiōn-, from Latin illātus, past participle of īnferre, to carry in, infer : in-, in; see in-2 + lātus, brought; see telə- in Indo-European roots.]