Definition of ultrasound noun from the Oxford Advanced Learner's Dictionary

     

    ultrasound

     noun
    noun
    BrE BrE//ˈʌltrəsaʊnd//
     
    ; NAmE NAmE//ˈʌltrəsaʊnd//
     
    Operations, Medical examinations
     
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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 Wordfinderbiopsy, diagnose, examine, sample, scan, swab, symptom, test, ultrasound, X-ray See related entries: Operations, Medical examinations
See the Oxford Advanced American Dictionary entry: ultrasound