anechoic

American

[an-e-koh-ik] / ˌæn ɛˈkoʊ ɪk /

adjective

(of a recording chamber, television studio, or the like) characterized by an unusually low degree of reverberation; echo-free.

anechoic British

/ ˌænɪˈkəʊɪk /

adjective

having a low degree of reverberation of sound

an anechoic recording studio

"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

Etymology

Origin of anechoic

First recorded in 1945–50; an- ¹ + echoic

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The generous funding, moreover, allowed scientists and engineers to buy and build expensive equipment—for instance, anechoic chambers to create the world’s quietest rooms.

From The Wall Street Journal • Mar. 28, 2026

In 2004, Guinness World Records certified the anechoic chamber at Orfield Laboratories as the quietest place on Earth, with an ambient sound level of –9.4 decibels A-weighted.

From New York Times • Nov. 23, 2022

And: “In the anechoic chamber, you become the sound.”

From New York Times • Nov. 23, 2022

Acoustician Jukka Pätynen stands in an anechoic space, designed so that no surface reflects sound.

From Nature • Apr. 28, 2020

Albeit far smaller than its now demolished predecessor at Harvard, the anechoic chamber at Cooper Union also depends on fibreglass wedges for its effect.

From The Guardian • Dec. 24, 2018

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023