[ 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.

Nearby words

  1. echinulate,
  2. echinus,
  3. echium,
  4. echiurid,
  5. echiuroid,
  6. echo boomer,
  7. echo chamber,
  8. echo check,
  9. echo diplacusis,
  10. echo plate

Origin of echo

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

Related forms Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for echo

British Dictionary definitions for echo


/ (ˈɛkəʊ) /

noun plural -oes

verb -oes, -oing or -oed

Derived Formsechoing, adjectiveecholess, adjectiveecho-like, adjective

Word Origin for echo

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


/ (ˈɛkəʊ) /


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


/ (ˈɛkəʊ) /


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


/ (ˈɛkəʊ) /


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

Word Origin and History for echo
Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for 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.