Definition of "acoustic" []

• Of or relating to sound, the sense of hearing, or the science of sound. (adjective)
• Designed to carry sound or to aid in hearing. (adjective)
• Designed to absorb or control sound: acoustic tile. (adjective)
• Music Of or being an instrument that does not produce or enhance sound electronically: an acoustic guitar; an acoustic bass. (adjective)
• Music Being a performance that features such instruments: opened the show with an acoustic set. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Jordan has a choral singing background but prefers the term 'acoustic music' rather than 'folk' to describe her work."
• ""Villchur's development of what he called the acoustic suspension woofer made it possible for music lovers to buy loudspeakers that were domestically acceptable," Mr. Atkinson said in a 2009 interview."
• ""The noises generated by ships create what I call acoustic smog," said Michel Andre, director of the Laboratory of Applied Bio-Acoustics in Barcelona."