anechoic

adj

Etymology: From an- + echoic, from echo + -ic, from Middle English ecco, ekko, from Medieval Latin ecco, from Latin echo, from Ancient Greek ἠχώ (ēkhṓ), from ἠχή (ēkhḗ, “sound”).

1. Lacking echoes; particularly, designed to absorb sound.

   “The bassoonist settled into the anechoic chamber and prepared for another grueling recording session.”