oratory

• (UK) IPA^(key): /ˈɒɹət(ə)ɹi/
• (US) IPA^(key): /ˈɔ.ɹə.tɔ.ɹi/

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Borrowed from Latin ōrātōria, from the feminine of ōrātōrius (“oratorial”).

oratory (uncountable)

1. The art of public speaking, especially in a formal, expressive, or forceful manner.
2. Eloquence; the quality of artistry and persuasiveness in speech or writing.

• (art of public speaking): public speaking

From Anglo-Norman oratorie, Middle French oratoire, and their source, Late Latin ōrātōrium.

London Oratory (2).

oratory (plural oratories)

1. (countable) A private chapel.
   • Jeremy Taylor

     Do not omit thy prayers for want of a good oratory, or place to pray in.

2. (countable) A large Roman Catholic church.