Webster’s Revised Unabridged Dictionary · 1913
Salutatory
Sa·lu′ta·to·ry, a. [L. salutatorius. See Salute.] Containing or expressing salutations; speaking a welcome; greeting; — applied especially to the oration which introduces the exercises of the Commencements, or similar public exhibitions, in American colleges.
Sa·lu′ta·to·ry, n. 1. A place for saluting or greeting; a vestibule; a porch. [Obs.] Milton.
2. (American Colleges) The salutatory oration.