ANECHOIC
Meaning of ANECHOIC in English
adj.
Pronunciation: ˌ a-ni- ' k ō -ik
Function: adjective
Date: 1946
: free from echoes and reverberations <an anechoic chamber>
Merriam Webster Collegiate English Dictionary.
Merriam Webster - Энциклопедический словарь английского языка.
2012