adjective Also a·cous·ti·cal.
- 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.
Examples from the Web for acoustic
George would take out his lyric book and acoustic guitar and play us the song we would be working on that day.
George took his acoustic guitar and began showing me the chord changes, which I nervously wrote out on a chord chart.
Microwave "pain rays" and acoustic crowd dispersal weapons already exist.
The Army suggests that laser, microwave or acoustic weapons are the answer.
It was a lot of bonfires and acoustic guitar and kegs and all that stuff.‘Divergent’ Star Miles Teller Is About to Take Over Hollywood|Kevin Fallon|March 20, 2014|DAILY BEAST
The acoustic theory of sound-production in the flute is one on which there is great diversity of opinion.
Some acoustic formation of the land carried the noise, for the sea was eight miles away.The Slave Of The Lamp|Henry Seton Merriman
He can also be heard with perfect ease in every class room, as the acoustic properties of the building are excellent.Seven Graded Sunday Schools|Various
My acoustic apparatus is so ordered that I simply cannot endure the combination of pianoforte with violin or violoncello.The Life & Letters of Peter Ilich Tchaikovsky|Modeste Tchaikovsky
On the walls were electric apparatus, acoustic tubes and telephones—many telephones.The Four Horsemen of the Apocalypse|Vicente Blasco Ibanez