There are 2 main definitions of -ory in English:

-ory1

suffix

(Forming nouns) denoting a place for a particular function: dormitory repository

Origin

from Latin -oria, -orium, sometimes via Anglo-Norman French -orie, Old French -oire.

Derivatives

-orial

Pronunciation: /ˈɔːrɪəl/
suffix

Definition of -ory in: