echo sounder
Info · Definitions · Synonyms · Characters
Definitions
(noun) a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return. Synonyms: sonar, echo sounder, asdic. Examples: "Sonar is an acronym for sound navigation ranging." "Asdic is an acronym for antisubmarine detection investigation committee."
Noun Definition 1