a formal public speech, esp. one delivered on a special occasion, as on an anniversary, at a funeral, or at academic exercises.
2.
a public speech characterized by a studied or elevated style, diction, or delivery.
Origin: 1325–75; ME oracion < L ōrātiōn- (s. of ōrātiō) speech, prayer, equiv. to ōrāt(us) (ptp. of ōrāre to plead, deriv. of ōr-, s. of ōs mouth) + -iōn--ion
c.1375, "prayer," from L.L. orationem (nom. oratio) "speaking, discourse, language, prayer," from L. oratus, pp. of orare (see orator). Meaning "formal speech, discourse" first recorded 1502.