echo chamber echocardiography • echoencephalogram · · · Info · Definitions · Characters · · echo chamber · · Text Common · · Latin · · Scripts 12 · · Length 4 · · Syllables Definitions · · · (noun) an enclosed space for producing reverberation of a sound. Synonyms: echo chamber. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 e latin small letter e U+0065 h latin small letter h U+0068 m latin small letter m U+006D o latin small letter o U+006F r latin small letter r U+0072