noun
ultrasound
noun
1
Sound waves at a frequency too high for humans to hear.
"Ultrasound is used in industrial testing to detect cracks in metal."
2
A medical scan that uses high-frequency sound waves to create images of the inside of the body.
"The couple watched the ultrasound and saw their baby for the first time."
"The doctor ordered an ultrasound to check for gallstones."
How to Use Ultrasound
Learner’s notesIn plain EnglishVery high-pitched sound waves, or the medical scan that uses them to see inside the body.
Common pairings
have an ultrasound
ultrasound scan
ultrasound machine
Word Forms
ultrasounded past tense, ultrasounds plural, ultrasounds singular
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_____ is used in industrial testing to detect cracks in metal.
Etymology
From "ultra-" ("beyond") plus "sound".