ultrasound

noun

ul·​tra·​sound ˈəl-trə-ˌsau̇nd How to pronounce ultrasound (audio)
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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Common times for announcements are after the first trimester, first midwife appointment or first ultrasound. Raja Krishnamoorthi, Newsweek, 13 Mar. 2025 Your day typically involves extended periods of focused analysis—studying X-rays, MRIs, and ultrasounds to detect subtle abnormalities that others might miss. Caroline Castrillon, Forbes, 13 Mar. 2025 For 45 agonizing minutes, a radiologist conducted yet another internal ultrasound. Tracey Harrington McCoy, Parents, 6 Mar. 2025 An ultrasound or scan of the area may also occur, along with blood tests that check for clotting factors in the blood. Sandee Lamotte, CNN, 20 Feb. 2025 See All Example Sentences for ultrasound

Word History

First Known Use

1923, in the meaning defined at sense 1

Time Traveler
The first known use of ultrasound was in 1923

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Cite this Entry

“Ultrasound.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrasound. Accessed 22 Mar. 2025.

Kids Definition

ultrasound

noun
ul·​tra·​sound ˈəl-trə-ˌsau̇nd How to pronounce ultrasound (audio)
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 How to pronounce ultrasound (audio)
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

More from Merriam-Webster on ultrasound

Last Updated: - Updated example sentences
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