Plural of echo; multiple instances of reflected sound waves or repeated sounds and effects.
Standard English plural of 'echo,' from Greek 'ekho.' The word 'echo' itself comes from Greek mythology—Echo was a nymph whose voice was reduced to only repeating others' words.
The myth of Echo reveals ancient people's amazement at sound behavior—they literally imagined a supernatural being to explain why mountains and canyons repeat what you say, turning a physics phenomenon into unforgettable poetry.
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