spectrograph

noun

spec·​tro·​graph ˈspek-t(r)ə-ˌgraf How to pronounce spectrograph (audio)
: an instrument for dispersing radiation (such as electromagnetic radiation or sound waves) into a spectrum and recording or mapping the spectrum
spectrographic adjective
spectrographically adverb
spectrography noun

Example Sentences

Recent Examples on the Web Each of those boxes sends light to a spectrograph, which breaks the light apart by wavelength to get information such as composition and motion, including speed and direction. Alison Klesman, Discover Magazine, 27 June 2019 This image, taken with the Interferometric BIdimensional Spectrometer at the NSO’s Richard B. Dunn Solar Telescope, reveals solar features seen best through a spectrograph. Discover Magazine, 15 Aug. 2017 Among other instruments, the researchers used the HARPS spectrograph at the European Southern Observatory’s 3.6-meter telescope in Chile, to observe and measure these gravitational effect of the planet on a Barnard’s Star. Chelsea Gohd, Discover Magazine, 14 Nov. 2018 The second key ability provided by a spectrograph is the tracking of the motion materials. John Timmer, Ars Technica, 24 Oct. 2022 The spectrograph detected telltale signs of water vapor in the form of clouds and haze. Los Angeles Times, 12 July 2022 One of them, called MUSE, will launch a novel spectrograph—a sensor that allows scientists to carefully analyze the properties of light generated by the sun—with the ability to take longer exposures over a wider field of view. Tim Fernholz, Quartz, 16 Feb. 2022 The researchers were able to study it using the HARPS spectrograph at the La Silla Observatory. Joshua Hawkins, BGR, 1 Feb. 2022 My daughter, Starling, looked so small in my viewfinder, struggling under the weight of her spectrograph. Karen Russell, The New Yorker, 4 Oct. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'spectrograph.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

Etymology

International Scientific Vocabulary

First Known Use

1884, in the meaning defined above

Time Traveler
The first known use of spectrograph was in 1884

Dictionary Entries Near spectrograph

Cite this Entry

“Spectrograph.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spectrograph. Accessed 4 Feb. 2023.

Kids Definition

spectrograph

noun
spec·​tro·​graph ˈspek-t(r)ə-ˌgraf How to pronounce spectrograph (audio)
: an instrument for spreading radiation (as of light or sound) into a spectrum and photographing or mapping the spectrum

Medical Definition

spectrograph

noun
spec·​tro·​graph -ˌgraf How to pronounce spectrograph (audio)
: an instrument for dispersing radiation (as electromagnetic radiation or sound waves) into a spectrum and photographing or mapping the spectrum
spectrographic adjective
spectrographically adverb
spectrography noun
plural spectrographies

More from Merriam-Webster on spectrograph

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!


Challenging Words You Should Know

  • hedgehog reading a book
  • Often used to describe “the march of time,” what does inexorable mean?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?

PLAY