echo

[ ek-oh ]
/ ˈɛk oʊ /

noun, plural ech·oes.

verb (used without object), ech·oed, ech·o·ing.

to emit an echo; resound with an echo: The hall echoed with cheers.
to be repeated by or as by an echo: Shouts echoed through the street.

verb (used with object), ech·oed, ech·o·ing.

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Origin of echo

1300–50; Middle English ecco<Latin ēchō<Greek, akin to ēchḗ sound

OTHER WORDS FROM echo

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for echo (1 of 4)

echo
/ (ˈɛkəʊ) /

noun plural -oes

verb -oes, -oing or -oed

Derived forms of echo

echoing, adjectiveecholess, adjectiveecho-like, adjective

Word Origin for echo

C14: via Latin from Greek ēkhō; related to Greek ēkhē sound

British Dictionary definitions for echo (2 of 4)

Echo1
/ (ˈɛkəʊ) /

noun

either of two US passive communications satellites, the first of which was launched in 1960

British Dictionary definitions for echo (3 of 4)

Echo2
/ (ˈɛkəʊ) /

noun

Greek myth a nymph who, spurned by Narcissus, pined away until only her voice remained

British Dictionary definitions for echo (4 of 4)

Echo3
/ (ˈɛkəʊ) /

noun

communications code word for the letter e
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for echo

echo
[ ĕkō ]

A repeated sound that is caused by the reflection of sound waves from a surface. The sound is heard more than once because of the time difference between the initial production of the sound waves and their return from the reflecting surface.
A wave that carries a signal and is reflected. Echoes of radio signals (carried by electromagnetic waves) are used in radar to detect the location or velocity of distant objects.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.