ultrasound - definition and synonyms

noun [uncountable] medical 

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/ˈʌltrəˌsaʊnd/
  1. a way of producing an image of an organ inside someone’s body using sound waves

    Ultrasound was used to show the size of the tumour.

    1. a.

      ultrasound

      or

      ultrasound scan

      a process in which a part of someone’s body is examined using ultrasound, especially a baby inside its mother’s body