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Search Result for "sonar": 
Wordnet 3.0

NOUN (1)

1. 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;
- Example: "sonar is an acronym for sound navigation ranging"
- Example: "asdic is an acronym for antisubmarine detection investigation committee"
[syn: sonar, echo sounder, asdic]


WordNet (r) 3.0 (2006):

sonar n 1: 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 antisubmarine detection investigation committee" [syn: sonar, echo sounder, asdic]
Moby Thesaurus II by Grady Ward, 1.0:

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