Relating to, involving, or of the nature of sound.

= acoustic, adj. 2.

Of or relating to sound; acoustic. Now chiefly in phonic motor, phonic wheel (compounds).

designating or relating to the magnetic and acoustic properties of a substance or their interaction; spec. hydromagnetic.

Of, relating to, or consisting of sound; aural in form; (also) audible. Chiefly paired or contrasted with visual.