1610s, "to bring together and compare, examine critically as to agreement," from Latin collatus, irregular past participle of conferre "to bring together," from assimilated form of com "with, together" (see com-) + lātus "borne, carried" (see oblate (n.)), serving as past participle of ferre "to bear" (from PIE root *bher- (1) "to carry"). Specifically, in bookbinding, "to verify the correct arrangement" (of the pages), 1770. Related: Collated; collating.