Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An electrical instrument for detecting or monitoring sound under water.

from The Century Dictionary.

  • noun An instrument for detecting the flow of water in a pipe (thus locating waste) by the sounds produced in a microphone.
  • noun An instrument used in auscultation whereby sounds are conveyed through a column of water.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun a transducer that converts underwater sound waves into electrical signals, rather like a microphone

Etymologies

Sorry, no etymologies found.

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Examples

  • During some types of gynaecological examination, researchers have inserted a tiny microphone, called a hydrophone, into the uterus, enabling them to hear what the foetus can hear.

    On language and colic DC 2010

  • During some types of gynaecological examination, researchers have inserted a tiny microphone, called a hydrophone, into the uterus, enabling them to hear what the foetus can hear.

    Archive 2010-01-01 DC 2010

  • They used what's called a hydrophone to eventually get Humphrey out of that area.

    CNN Transcript May 21, 2007 2007

  • A underwater "hydrophone" recorded the sound, and it was synched with the video.

    Deep, Fiery Undersea Volcano Captured on Video | Universe Today 2009

  • The captain of our boat put a hydrophone in the water, and there were speakers on the deck.

    Judie Fein: The Eye of the Beluga Judie Fein 2011

  • Down below, Tomonori Akamatsu from Japan was listening for an audio trace with hydrophone omnidirectional equipment.

    When a Billion Chinese Jump Jonathan Watts 2010

  • Down below, Tomonori Akamatsu from Japan was listening for an audio trace with hydrophone omnidirectional equipment.

    When a Billion Chinese Jump Jonathan Watts 2010

  • Fish tagged with tiny transmitters emit a special signal when they pass by one of the hydrophone receivers.

    Fish 'Cell Phones' Track Marine Life 2010

  • Down below, Tomonori Akamatsu from Japan was listening for an audio trace with hydrophone omnidirectional equipment.

    When a Billion Chinese Jump Jonathan Watts 2010

  • Late that afternoon the hydrophone operator aboard U-331, submerged off Alexandria, picked up the sound of turning screws.

    Sealing Their Fate David Downing 2009

  • He has deployed hydrophones, which are microphones designed for underwater use, in waters off Japan to eavesdrop on the noises that lurk thousands of feet below the surface.

    Could Listening to the Deep Sea Help Save It? By 2021

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