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sonograph

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

Origin of sonograph

First recorded in 1955–60; sono- + -graph
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
sonograph in Medicine

sonograph

(sŏnə-grăf′, sō′nə-)
n.
  1. ultrasonograph
  2. sonogram
Related formsson′o•graphic adj.