| NOUN | artifact | echo sounder, sonar, asdic | 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 |
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| Meaning | 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. | |
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| Synonyms | sonar, asdic | |
| Part of | submarine, pigboat, sub, U-boat | A submersible warship usually armed with torpedoes |
| Parts | pinger | A pulse generator used for echo sounding in sonar |
| pulse generator | A generator of single or multiple voltage pulses | |
| Broader | measuring instrument, measuring system, measuring device | instrument that shows the extent or amount or quantity or degree of something |
| navigational instrument | An instrument used for navigating | |
| Spanish | sonar, sónar | |
| Catalan | sonar | |
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