Plural of auditory; multiple audiences or groups of listeners, or in architecture, plural of auditorium.
From Latin auditorium (place for hearing/listening), plural auditoria or auditories in English. Auditory comes from audire (to hear) with the -ium suffix creating a noun meaning 'place of hearing.'
An auditory is basically an old word for an auditorium—a place for people to gather and listen—and it connects back to the Latin root meaning 'to hear,' which also gives us 'audit'!
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