[əˈkuːstɪk], (Adjective)

Definitions:
- relating to sound or the sense of hearing
(e.g: dogs have a much greater acoustic range than humans)

- (of popular music or musical instruments) not having electrical amplification
(e.g: a sad, gentle acoustic ballad)


Phrases:

Origin:
mid 17th century: from Greek akoustikos, from akouein ‘hear’

[əˈkuːstɪk], (Noun)

Definitions:
- the properties or qualities of a room or building that determine how sound is transmitted in it
(e.g: the Symphony Hall has perfect acoustics)

- the branch of physics concerned with the properties of sound
(e.g: Tyndall lectured on acoustics)



Phrases:

Origin:
mid 17th century: from Greek akoustikos, from akouein ‘hear’