echo sounder
n. A device for measuring depth of water by sending pressure waves down from the surface and recording the time until the echo returns from the bottom.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
echo sounder
n (General Physics) a navigation and position-finding device that determines depth by measuring the time taken for a pulse of high-frequency sound to reach the sea bed or a submerged object and for the echo to return
echo sounding n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
| Noun | 1. | echo sounder - 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"pinger - a pulse generator used for echo sounding in sonar pulse generator - a generator of single or multiple voltage pulses; usually adjustable for pulse rate |
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Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
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