sonograph
so·nog·raph
noun
1.
an instrument that uses the differential transmission and reflection of ultrasonic waves in order to provide an image of a bodily organ
Origin
From sono- + -graph.
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.