sonography
C1CEFR level
60/100Rarity: rare
TechnicalRegister
The use of high-frequency sound waves to generate images of soft tissues and organs.
Abdominal sonography was chosen first because it avoids ionising radiation.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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