c. 1400, oblacioun, "an offering to a deity; a public ceremony of offering sacrifice; that which is sacrificed or solemnly offered to God," from Old French oblacion "offering, pious donation" and directly from Latin oblationem (nominative oblatio) "an offering, presenting, gift," in Late Latin "sacrifice," from Latin oblatus (see oblate (n.)). Related: Oblational; oblationary.