Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun ultrasound

2 senses of ultrasound

Sense 1
ultrasound -- (very high frequency sound; used in ultrasonography)
       => sound -- (mechanical vibrations transmitted by an elastic medium; "falling trees make a sound in the forest even when no one is there to hear them")

Sense 2
sonography, ultrasonography, echography, ultrasound -- (using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth or study bodily organs)
       => imaging, tomography -- ((medicine) obtaining pictures of the interior of the body)
       => prenatal diagnosis -- (any of the diagnostic procedures used to determine whether a fetus has a genetic abnormality)