'echo chamber' definitions:

Definition of 'echo chamber'

(from WordNet)

noun

An enclosed space for producing reverberation of a sound

Definition of 'echo chamber'

From: GCIDE

echo chamber \ech"o cham"ber\, n. (Music, broadcasting) A room with walls that resonate sound, producing audible echoes; it is used especially to create special sound effects in recording music. [PJC]

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