[son-uh-graf, -grahf]
noun Physics.
an instrument that produces a graphic representation of sound.

1955–60; sono- + -graph Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Medical Dictionary

sonograph son·o·graph (sŏn'ə-grāf', sō'nə-)

  1. See ultrasonograph.

  2. See sonogram.

son'o·graph'ic adj.
The American Heritage® Stedman's Medical Dictionary
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