acoustic

Etymology

Borrowed from Medieval Latin acousticus, from Ancient Greek ἀκουστῐκός (akoustikós, “of or for hearing”), from ἀκούω (akoúō, “to hear”) + -ῐκός (-ikós, adjectival suffix).

adj

1. Pertaining to the sense of hearing, the organs of hearing, or the science of sounds.
   1. (architecture) (of building materials) Used for soundproofing or modifying sound.
   2. (of a device or system) Utilizing sound energy in its operation.
   3. (weaponry) (of an explosive mine or other weapon) Able to be set off by sound waves.
2. (music) Naturally producing or produced by an instrument without electrical amplification or the need thereof.
   acoustic guitar, acoustic piano

noun

1. (usually in the plural) The properties or qualities of a room or building that determine how sound is transmitted in it.
2. (medicine) A medicine or other agent to assist hearing.
3. Clipping of acoustic guitar.