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sonar

noun

1 sonar

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:
— Sonar is an acronym for sound navigation ranging.

synonyms: asdic, echo sounder.

Roget 466: measurement, admeasurement, mensuration, survey, valuation, appraisement, assessment, assize; estimate, estimation; dead reckoning, reckoning etc. ... show more

Roget 208: depth; deepness etc. adj.; profundity, depression etc. (concavity) 252.    hollow, pit, shaft, well, ... show more

Dutch: sonar, sonarapparatuur
Polish: sonar


Moby thesaurus: astronavigation, bathometry, bathymetry, celestial navigation, chronometer, coastwise navigation, consolan, dead reckoning, depth sounding, echo sounding, echolocation, fathomage, fathoming, fix, line of position, loran, oceanography, pilotage, plane sailing, point-to-point navigation ... show more.

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