[echo] n, pl ech.oes also echos [ME ecco, fr. MF & L; MF echo, fr. L, fr. Gk echo; akin to L vagire to wail, Gk eche sound] (14c) 1 a: the repetition of a sound caused by reflection of sound waves b: the sound due to such reflection
2. a: a repetition or imitation of another: reflection b: repercussion, result c: trace, vestige d: response
3: one who closely imitates or repeats another's words, ideas, or acts
4: a soft repetition of a musical phrase
5. a: the repetition of a received radio signal due esp. to reflection of part of the wave from an ionized layer of the atmosphere b (1): the reflection of transmitted radar signals by an object (2): the visual indication of this reflection on a radarscope -- echo.ey adj
[2]echo vb ech.oed ; echo.ing vi (1596) 1: to resound with echoes
2: to produce an echo ~ vt 1: repeat, imitate
2: to send back (a sound) by the reflection of sound waves [1]Echo n [Gk Echo]: a nymph in Greek mythology who pines away for love of Narcissus until nothing is left of her but her voice
[2]Echo (ca. 1952)--a communications code word for the letter e