oratory

noun

1. skill or eloquence in public speaking: The evangelist moved thousands to repentance with his oratory.
2. the art of public speaking, especially in a formal and eloquent manner.

noun, plural or·a·to·ries.

1. a place of prayer, as a small chapel or a room for private devotions.
2. (initial capital letter) Roman Catholic Church. any of the religious societies of secular priests who live in religious communities but do not take vows.

noun

1. the art of public speaking
2. rhetorical skill or style

noun plural -ries

1. a small room or secluded place, set apart for private prayer

noun RC Church

1. Also called: Congregation of the Oratory the religious society of secular priests (Oratorians) living in a community founded by St Philip Neri
2. any church belonging to this societythe Brompton Oratory

n.1“formal public speaking, the art of eloquence,” 1580s, from Latin (ars) oratoria “oratorical (art),” fem. of oratorius “of speaking or pleading, pertaining to an orator,” from orare “to speak, pray, plead” (see orator). n.2“small chapel,” c.1300, from Old French oratorie and directly from Late Latin oratorium “place of prayer” (especially the Oratory of St. Philip Neri in Rome, where musical services were presented), noun use of an adjective, as in oratorium templum, from neuter of Latin oratorius “of or for praying,” from orare “to pray, plead, speak” (see orator).