1. [ noun ] (medicine,obstetrics) 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
Synonyms: ultrasonography sonography
Related terms: imaging prenatal_diagnosis
2. [ noun ] (physics) very high frequency sound; used in ultrasonography
Related terms: sound
Similar spelling:   Ultrasuede