Webster’s Revised Unabridged Dictionary · 1913
Propitiatory
Pro·pi′ti·a·to·ry (·ry̆), a. [L. propitiatorius: cf. F. propitiatoire.] Having the power to make propitious; pertaining to, or employed in, propitiation; expiatory; as, a propitiatory sacrifice. Sharp.
Pro·pi′ti·a·to·ry, n. [L. propitiatorium.] (Jewish Antiq.) The mercy seat; — so called because a symbol of the propitiated Jehovah. Bp. Pearson.