plural of echoing

A poem constructed by the surrealist technique of alternately writing a stanza and then "mirroring" it in some fashion to create the following stanza.

plural of echo chamber

A room or other enclosed space that is highly conducive to the production of echoes, particularly one that has been designed and built for this purpose.

(phonology) A paragogic vowel that is a repetition of the final vowel of a word

(physics) A form of resonance sometimes observed as a coherent pulse of light after two similar pulses have traversed a medium.

The technique of using reflected pulses of sound to determine depth or the location of objects (or fish) under water. / A particular measurement made using this technique.

(astronomy) A phenomenon caused by light reflected off surfaces distant from the source, and arriving at the observer with a delay relative to this distance, analogous to an echo of sound.

Synonym of applaud to the echo

plural of echo vowel