isacoustic

[ahy-suh-koo-stik or, esp. British, ahy-suh-kou-]
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adjective

of or relating to two sounds of equal intensity.

Origin of isacoustic

First recorded in 1895–1900; is- + acoustic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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Historical Examples of isacoustic