ultrasound
noun
ul·tra·sound
ˈəl-trə-ˌsau̇nd 
plural ultrasounds
1
: vibrations of the same physical nature as sound but with frequencies above the range of human hearing
2
: the diagnostic or therapeutic use of ultrasound and especially a noninvasive technique involving the formation of a two-dimensional image used for the examination and measurement of internal body structures and the detection of bodily abnormalities
called also sonography, ultrasonography
3
: a diagnostic examination using ultrasound
The patient was scheduled for an abdominal ultrasound.
prenatal ultrasounds
Examples of ultrasound in a Sentence
They used ultrasound to examine his heart.
She had an ultrasound exam this morning.
She had an ultrasound this morning.
She showed me an ultrasound of her unborn baby.
Recent Examples on the Web
In her second slide, the soon-to-be mom showed a short clip of an ultrasound showing her baby girl moving in her belly.
—
Hannah Sacks, PEOPLE, 26 Sep. 2025
The couple ends with Luke, Nicole, Beau and Tex holding hands and walking away from the camera, with the ultrasound photos, draped over a stool, in the video’s foreground.
—Jessica Nicholson, Billboard, 23 Sep. 2025
In 2023, Kering partnered with PureDenim to develop and adapt Sonovia’s ultrasound dyeing technology into its denim lines.
—Angela Velasquez, Sourcing Journal, 22 Sep. 2025
Sudden movements, like the one caught on McCoy's ultrasound, are often just a sign of a healthy and energetic baby.
—Daniella Gray, MSNBC Newsweek, 20 Sep. 2025
See All Example Sentences for ultrasound
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Hannah Sacks, PEOPLE, 26 Sep. 2025
The couple ends with Luke, Nicole, Beau and Tex holding hands and walking away from the camera, with the ultrasound photos, draped over a stool, in the video’s foreground.
—Jessica Nicholson, Billboard, 23 Sep. 2025
In 2023, Kering partnered with PureDenim to develop and adapt Sonovia’s ultrasound dyeing technology into its denim lines.
—Angela Velasquez, Sourcing Journal, 22 Sep. 2025
Sudden movements, like the one caught on McCoy's ultrasound, are often just a sign of a healthy and energetic baby.
—Daniella Gray, MSNBC Newsweek, 20 Sep. 2025
See All Example Sentences for ultrasound
Cite this Entry
“Ultrasound.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrasound. Accessed 6 Oct. 2025.
Copy CitationKids Definition
ultrasound
noun
ul·tra·sound
ˈəl-trə-ˌsau̇nd
1
: ultrasonic vibrations
2
: the use of ultrasound for medical diagnosis or treatment and especially a technique involving the formation of a two-dimensional image used for examining internal body structures and detecting abnormalities in the body
Medical Definition
ultrasound
1 of 2 noun
ul·tra·sound
ˈəl-trə-ˌsau̇nd
1
: vibrations of the same physical nature as sound but with frequencies above the range of human hearing compare infrasound
2
: the diagnostic or therapeutic use of ultrasound and especially a noninvasive technique involving the formation of a two-dimensional image used for the examination and measurement of internal body structures and the detection of bodily abnormalities
called also echography, sonography, ultrasonography
3
: a diagnostic examination using ultrasound
ultrasound
2 of 2 adjective
: of, relating to, performed by, using, or specializing in ultrasound
an ultrasound technician
ultrasound imaging
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