Definition of oratory noun from the Oxford Advanced Learner's Dictionary

oratory

noun
ˈɒrətri
 
; ˈɔːrətɔːri
 
; ˈɑːrətɔːri
 
plural oratories
 
1 [uncountable] the skill of making powerful and effective speeches in public
Synonym
rhetoric
The crowd was held spellbound by her oratory.
2 [countable] a room or small building that is used for private prayer or worship