Lewis & Short

ĭnunctĭo, ōnis, f. [inunguo], an anointing, besmearing with unguents; a spreading on, applying (post-Aug.): tridui, Plin. 23, 8, 29, § 117: matutina, id. 28, 4, 7, § 37: medicamentorum, Cels. 7, 7, 14: suci plantaginis, Col. 6, 33, 2.