Auditory

Etymology 1
From auditorius:.

Adjective

 * Of, or relating to hearing, or to the sense or organs of hearing

Synonyms

 * otic

Derived terms

 * auditory bone
 * auditory nerve

Noun

 * 1)  An assembly of hearers; an audience.
 * 2)  An auditorium.

Related terms

 * audition
 * audio