A sonar device used for echo sounding

A form of auditory hallucination, associated with schizophrenia, in which the patient hears his/her thoughts spoken aloud.

To give loud and continuous applause.

An audio delay device which records incoming audio to a loop of magnetic tape, then replays it over a series of playback heads before it is erased again by new incoming audio.

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

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.

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

plural of echo chamber

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

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.