a remedy for hearing loss or deafness of or relating to the science of acoustics; "acoustic properties of a hall
An acoustic guitar or other instrument is one whose sound is produced without any electrical equipment. + acoustically acous·ti·cal·ly acoustically based music
If you refer to the acoustics or the acoustic of a space, you are referring to the structural features which determine how well you can hear music or speech in it. + acoustically acous·ti·cal·ly The church is acoustically perfect