SONOGRAPH
\sˈɒnəɡɹˌaf], \sˈɒnəɡɹˌaf], \s_ˈɒ_n_ə_ɡ_ɹ_ˌa_f]\
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an instrument that uses the differential transmission and reflection of ultrasonic waves in order to provide an image of a bodily organ
By Princeton University
