ultrasound

The noun ultrasound is a medical term for a scan that allows doctors to easily and safely see inside a patient's body.

An ultrasound uses inaudible sound waves to create a picture of a person's internal organs, muscles, bones, and other body parts. The type of ultrasound that's most familiar to non-medical professionals is the kind that allows a doctor or technician to see a fetus from the outside of a pregnant woman's stomach. The person who performs an ultrasound is called a sonographer or a radiologist.

Definitions of ultrasound
  1. noun
    using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth or study bodily organs
    synonyms: echography, sonography, ultrasonography
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    types:
    A-scan ultrasonography
    the use of ultrasonography to measure the length of the eyeball
    B-scan ultrasonography
    the use of ultrasonography to view structure in the back of the eye
    type of:
    prenatal diagnosis
    any of the diagnostic procedures used to determine whether a fetus has a genetic abnormality
    imaging, tomography
    (medicine) obtaining pictures of the interior of the body
  2. noun
    very high frequency sound; used in ultrasonography
    see moresee less
    type of:
    sound
    mechanical vibrations transmitted by an elastic medium
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