ultrasound
//ˈʌl.trə.saʊnd//
Noun
ultrasoundSingular
ultrasoundsPlural
1
Sound waves with frequencies higher than the upper limit of human hearing, typically above 20 kHz.
Ultrasound is used in various industrial applications because it cannot be heard by humans.
2
A medical imaging technique that uses high-frequency sound waves to produce images of structures within the body.
The doctor ordered an ultrasound to check the baby's development.
3
An examination or scan performed using ultrasound technology, especially to monitor a developing fetus during pregnancy.
She had an ultrasound to check on the baby's development.