hy·dro·phone (h  dr -f n )n. An electrical instrument for detecting or monitoring sound under water. |
hydrophone [ˈhaɪdrəˌfəʊn]
n
(Electronics) an electroacoustic transducer that converts sound or ultrasonic waves travelling through water into electrical oscillations
| hydrophone (hdr-fn) 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. |
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