A repetition or mimicking of a certain passage, usually with less force and volume than the original statement.<br><br>Reflected sound producing a distinct repetition of the original sound. Echo in mountains is distinct by reason of distance of travel after original signal has ceased.<br><br>1) One distinct repeat of a sound because of the sound reflecting off a surface. 2) Loosely, used to mean reverberation (the continuing of a sound after the source stops emitting it, caused by many discrete echoes closely spaced in time).