Sonar

2 definitions found

From WordNet (r) 2.0 [wn]:

  sonar
       n : 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; asdic is an acronym for
           anti-submarine detection investigation committee [syn: {echo


           sounder}, {asdic}]

From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:

  30 Moby Thesaurus words for "sonar":
     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, radar, radio beacon,
     radio navigation, sextant, shoran, sofar, sounding, soundings,
     tables, water