sa·lu·ta·to·ry /səˈlutəˌtori, ˌtɔr-/
  (a.)致敬意的;歡迎的
  Sa·lu·ta·to·ry, n.
  1. A place for saluting or greeting; a vestibule; a porch. [Obs.]
  2. American Colleges The salutatory oration.
  ◄ ►
  Sa·lu·ta·to·ry a.  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.