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hydrophone

[hahy-druh-fohn] /ˈhaɪ drəˌfoʊn/
noun
1.
a device for locating sources of sound under water, as for detecting submarines by the noise of their engines.
2.
an instrument employing the principles of the microphone, used to detect the flow of water through a pipe.
3.
Medicine/Medical. an instrument used in auscultation, whereby sounds are intensified through a column of water.
Origin of hydrophone
1855-1860
1855-60; hydro-1 + -phone
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for hydrophone

hydrophone

/ˈhaɪdrəˌfəʊn/
noun
1.
an electroacoustic transducer that converts sound or ultrasonic waves travelling through water into electrical oscillations
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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hydrophone in Science
hydrophone
  (hī'drə-fōn')   
A device used to detect or monitor sound under water. Hydrophones are often installed or towed in arrays that can be used to pinpoint a sound source or provide sea-floor imaging as part of a sonar system.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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