Relating to hearing or the sense of sound; connected to listening or the ear.
From Latin auditorius (relating to hearing), derived from auditor (listener). The -ial suffix turns it into an adjective meaning 'of or pertaining to' the root concept of hearing and listening.
Auditorial is basically a fancier way to say 'about hearing,' but it's used in scientific contexts—it's how scientists dress up the everyday word 'hearing' in formal clothing!
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