1. sonar

noun. ['ˈsoʊnɑːr'] 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.


  • asdic
  • measuring system
  • submarine
  • sub
  • navigational instrument
  • pulse generator
  • measuring instrument
  • measuring device
  • pigboat
  • echo sounder
  • U-boat


  • overhead
  • surface
  • defend

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Rhymes with Sonar

  • molenaar
  • molnar
  • stinar
  • synar
  • synar
  • wagenaar
  • wassenaar

Sentences with sonar

1. Noun, singular or mass
These devices use sonar to find and track fish so the angler can catch them.

2. Adjective
In WWII, destroyers sent these sonar signals to find lurking submarines.