- the art of public speaking 
- rhetorical skill or style 
WordReference Random House Learner's Dictionary of American English © 2025
or•a•to•ry1 /ˈɔrəˌtɔri, ˈɑr-/USA pronunciation  
n. [uncountable]
WordReference Random House Unabridged Dictionary of American English © 2025- skill or ability in public speaking; the art of public speaking, esp. in a formal and eloquent manner.
or•a•to•ry1 
(ôr′ə tôr′ē, -tōr′ē, or′-),USA pronunciation n. 
 
or•a•to•ry2 (ôr′ə tôr′ē, -tōr′ē, or′-),USA pronunciation n., pl. -ries.
- skill or eloquence in public speaking:The evangelist moved thousands to repentance with his oratory.
- the art of public speaking, esp. in a formal and eloquent manner.
- Latin ōrātōria, noun, nominal use of feminine of ōrātōrius of an orator. See orator, -tory1
- 1580–90
- 1.See corresponding entry in Unabridged rhetoric, delivery, declamation.
or•a•to•ry2 (ôr′ə tôr′ē, -tōr′ē, or′-),USA pronunciation n., pl. -ries.
- Religiona place of prayer, as a small chapel or a room for private devotions.
- Religion(cap.) [Rom. Cath. Ch.]any of the religious societies of secular priests who live in religious communities but do not take vows.
- Late Latin ōrātōrium place of prayer. See orator, -tory2
- Middle English 1300–50
Collins Concise English Dictionary © HarperCollins Publishers::
- a small room or secluded place, set apart for private prayer 
'oratory' also found in these entries (note: many are not synonyms or translations):
Neri
 - Oratorian
 - Seneca
 - Websterian
 - agitate
 - chapel
 - confutation
 - declamation
 - demagogue
 - high-flown
 - laboratory school
 - language laboratory
 - magnetize
 - neither
 - oratorical
 - oratorio
 - palm
 - platitude
 - postprandial
 - rhetoric
 - rhetorical
 - senatorial
 - silken
 - sophist
 - taiaha