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.

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

  • 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

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

    CNN Transcript May 21, 2007

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

    Deep, Fiery Undersea Volcano Captured on Video | Universe Today

  • 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

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

    When a Billion Chinese Jump

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

    When a Billion Chinese Jump

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

    Fish 'Cell Phones' Track Marine Life

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

    When a Billion Chinese Jump

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

    Sealing Their Fate

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