from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A graphic or photographic representation of a spectrum.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A visual representation of the spectrum of a sound changing through time.
  • n. A visual representation of the spectrum of a celestial body's radiation.

from the GNU version of the Collaborative International Dictionary of English

  • n. A photograph, map, or diagram of a spectrum.

from The Century Dictionary and Cyclopedia

  • n. The photograph of a spectrum, made-by a spectrograph, that is, a spectroscopic camera.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a photographic record of a spectrum


from Wiktionary, Creative Commons Attribution/Share-Alike License

spectro- + -gram


  • By this means there is attained what is known as a mass spectrogram, that is to say a series of lines in which each line corresponds to a certain atomic weight, and where the numerical value of each atomic weight can be read off from the distance of the line from the line or lines which are produced by any fundamental substance that is chosen as a standard - usually carbon-12 or oxygen-16.

    Nobel Prize in Chemistry 1922 - Presentation Speech

  • The sound of the heartbeat within is then audible (best heard if you're wearing full earphones rather than earbuds, which don't carry the deep sound of the heartbeat very well), and a spectrogram image of the heart's rhythm appears on the phone's screen.

    An app after your own heart

  • Very cool tricks--I especially like how they turned the spectrogram into a set of fingerprint-like "features" which could then be matched in a database.

    Making Light: Open thread 134

  • Nearby, the intact Surveyor 5 withstood all odds and made space history by managing to perform an alpha particle spectrogram of the soil while withstanding temperatures considerably greater than the boiling point.

    Weekend SkyWatcher's Forecast: March 19-21, 2010 | Universe Today

  • “Okay, show us the original spectrogram, please,” said Uhura.

    Delta Anomaly

  • He shows me a spectrogram of a wilderness recording, in which all the component noises are mapped according to pitch.

    Clive Thompson on How Man-Made Noise May Be Altering Earth's Ecology

  • I.e. he generated a spectrogram of the proxies using a different orthonormal basis set.

    The RE Benchmark in A&W « Climate Audit

  • Peter Shann Ford didn't use the first tool of any speech researcher - the spectrogram.

    Thanks, Australia

  • Taking geekiness to a whole new level, this page from the University of Vienna contains a spreadsheet in various windows formats which does realtime additive Fourier synthesis with sound output, a waveform and spectrogram.

    The Excel spreadsheet synthesizer

  • My very first spectrogram of canal rays in hydrogen and helium revealed the effect of the electric field on

    Johannes Stark - Nobel Lecture


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