[ uh-koo-stik ]
See synonyms for acoustic on
adjectiveAlso a·cous·ti·cal.
  1. pertaining to the sense or organs of hearing, to sound, or to the science of sound.

  2. (of a building material) designed for controlling sound.

  1. Music.

    • of, relating to, or being a musical instrument whose sound is not electrically enhanced or modified.

    • arranged for or made up of such instruments: an acoustic solo; an acoustic group.

  1. Obsolete. a remedy for deafness or imperfect hearing.

Origin of acoustic

From the Greek word akoustikós, dating back to 1595–1605. See acouasm, -tic

Other words from acoustic

  • a·cous·ti·cal·ly, adverb
  • non·a·cous·tic, adjective, noun
  • non·a·cous·ti·cal, adjective
  • non·a·cous·ti·cal·ly, adverb
  • un·a·cous·tic, adjective
  • un·a·cous·ti·cal, adjective
  • un·a·cous·ti·cal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use acoustic in a sentence

  • The building possesses about the best acoustical properties of any place of worship in Preston.

  • We need investigation to determine the laws of the influence of optical and acoustical knowledge upon perception.

    Criminal Psychology | Hans Gross
  • Even with the best of acoustical systems, hearing inside a helmet tended to be distorted and dimmed.

    The Judas Valley | Gerald Vance
  • Bell suddenly turned aside, because of his acoustical knowledge, and invented the telephone, while Gray kept straight ahead.

    The History of the Telephone | Herbert N. Casson
  • Acoustical research was his real interest, and to that he devoted all the time and money he could spare from his business.

British Dictionary definitions for acoustic



/ (əˈkuːstɪk) /

  1. of or related to sound, the sense of hearing, or acoustics

  2. designed to respond to, absorb, or control sound: an acoustic tile

  1. (of a musical instrument or recording) without electronic amplification: an acoustic bass; an acoustic guitar

Origin of acoustic

C17: from Greek akoustikos, from akouein to hear

Derived forms of acoustic

  • acoustically, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012