a representation or photograph of a spectrum.

1890–95; spectro- + -gram1

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Example sentences
He shows me a spectrogram of a wilderness recording, in which all the component noises are mapped according to pitch.
If you run it through a spectrogram, you can see a creepy picture of the artist's face.
What he ended up with was a spectrogram- an electronic tracing of speech sounds.
If a match is found, the citizen scientist clicks on that sound's spectrogram and the results are stored.
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