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
The following week on May 23, Kyle shared more photos with his wife on Instagram, including a selfie of them holding up ultrasound photos and a candid shot of them holding hands during their wedding.
—
Ashlyn Robinette, PEOPLE, 25 May 2026
Don’t let ‘your ultrasound looks fine’ be the end of the conversation.
—Samantha Agate, Sacbee.com, 20 May 2026
Currently, radar, sonar, medical ultrasound, and wireless communication systems struggle in crowded, noisy environments.
—Mrigakshi Dixit, Interesting Engineering, 19 May 2026
Small follicle cysts may appear on ultrasound — but they are not required for diagnosis.
—Samantha Agate, Fort Worth Star-Telegram, 19 May 2026
See All Example Sentences for ultrasound
Examples are automatically compiled from online sources to
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Ashlyn Robinette, PEOPLE, 25 May 2026
Don’t let ‘your ultrasound looks fine’ be the end of the conversation.
—Samantha Agate, Sacbee.com, 20 May 2026
Currently, radar, sonar, medical ultrasound, and wireless communication systems struggle in crowded, noisy environments.
—Mrigakshi Dixit, Interesting Engineering, 19 May 2026
Small follicle cysts may appear on ultrasound — but they are not required for diagnosis.
—Samantha Agate, Fort Worth Star-Telegram, 19 May 2026
See All Example Sentences for ultrasound
Cite this Entry
“Ultrasound.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrasound. Accessed 29 May. 2026.
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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