American English

Definition of ultrasound noun from the Oxford Advanced American Dictionary

     

    ultrasound

     noun
    noun
    NAmE//ˈʌltrəˌsaʊnd//
     
     
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  1. 1[uncountable] sound that is higher than humans can hear
  2. 2[uncountable, countable] a medical process that produces an image of what is inside your body Ultrasound showed she was expecting twins. an ultrasound scan ultrasound scanning compare sonogram
See the Oxford Advanced Learner's Dictionary entry: ultrasound