Where does “oratory” come from?

Oratory derives from Latin oratorius, meaning "of speaking," from Latin orator "speaker," from Latin orare "to speak," from Latin oro, from Latin os, from Proto-Indo-European h₃éh₁os "mouth."

oratory (English): A private chapel or prayer room; A large Roman...

Definitions

  1. A private chapel or prayer room; A large Roman...

Ancestry of “oratory”, step by step

oratory traces back through two separate lines of ancestry.

via Middle English ōrātōrīe

StepLanguageWordMeaning
1Middle Englishōrātōrīeroom or other place for prayer or private study;...
2Anglo-Normanoratorie
3Latinōrātōrium
4Latinōrātōriusoratorical
5Latin-tōriusory
6Latin-tor-er
7Proto-Italic-tōrForms agent nouns to verb stems
8Proto-Indo-European-tōrDerives agent nouns from verbs, denoting someone...
9Proto-Indo-European-tor-s

via Latin ōrātōria

StepLanguageWordMeaning
1Latinōrātōriaoratory the oratorical art
2Latin-iaUsed to form a feminine abstract noun, usually...
3Ancient Greek-ῐ́ᾱ{{l|en|-ia}}; "suffix forming abstract feminine...
4Proto-Indo-European-íh₂
5Proto-Indo-European-h₂Creates collective nouns, which refer to groups...
Every word from Proto-Indo-European -tor-s