transcription, транскрипция: [ ˈəl-trə-ˌsau̇nd ]
noun
Date: 1923
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
3. : a diagnostic examination using ultrasound