spectrograph

noun
spec·​tro·​graph | \ ˈspek-t(r)ə-ˌgraf How to pronounce spectrograph (audio) \

Definition of spectrograph

: an instrument for dispersing radiation (such as electromagnetic radiation or sound waves) into a spectrum and recording or mapping the spectrum

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Other Words from spectrograph

spectrographic \ ˌspek-​t(r)ə-​ˈgra-​fik How to pronounce spectrographic (audio) \ adjective
spectrographically \ ˌspek-​t(r)ə-​ˈgra-​fi-​k(ə-​)lē How to pronounce spectrographically (audio) \ adverb
spectrography \ spek-​ˈträ-​grə-​fē How to pronounce spectrography (audio) \ noun

Examples of spectrograph in a Sentence

Recent Examples on the Web To get a better look at the system, the team used the European Southern Observatory's HARPS spectrograph in Chile. Jennifer Leman, Popular Mechanics, "Could There Be Life Near These Two New Super-Earths?," 6 July 2020 The High Accuracy Radial velocity Planet Searcher, known as the HARPS spectrograph, detected two planets around Gliese 887. Ashley Strickland, CNN, "Astronomers find super-Earths orbiting a star 11 light-years away," 25 June 2020 The Very Large Telescope based in Chile has a new and more powerful spectrograph named ESPRESSO, so astronomers decided to use it for more precise measurements of the planet. Ashley Strickland, CNN, "Astronomers confirm Earth-size exoplanet around nearest star and maybe more," 4 June 2020 The echelle spectrograph for rocky exoplanets and stable spectroscopic observations (ESPRESSO) is an excellent tool to make these observations. Chris Lee, Ars Technica, "Fine structure constant may vary with space, constant in time," 28 Apr. 2020 More importantly, vastly improved new versions of instruments called spectrographs will allow far more sensitive searches for wobbles than those that were possible with the HARPS detector used by Dumusque and his colleagues. Corey S. Powell, Scientific American, "The Hunt Is on for Alpha Centauri’s Planets," 5 Aug. 2019 Another light will then appear far overhead as the second stage of the Black Brant rocket fires, carrying an ultraviolet spectrograph 160 miles above northern Alaska. Anchorage Daily News, "Stand by for takeoff: NASA rocket prepares to take off at Poker Flat range near Fairbanks," 25 Jan. 2020 These spectrographs are designed to pick up wobbles as slight as 10 centimeters per second. Corey S. Powell, Scientific American, "The Hunt Is on for Alpha Centauri’s Planets," 5 Aug. 2019 Follow-up observations made by the Very Large Telescope at the European Southern Observatory, using the telescope's X-shooter spectrograph instrument, revealed the shape of the gas to resemble a ring or disk. Ashley Strickland, CNN, "What this giant evaporating planet tells us about Earth's future," 4 Dec. 2019

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.

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First Known Use of spectrograph

1884, in the meaning defined above

History and Etymology for spectrograph

International Scientific Vocabulary

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Time Traveler for spectrograph

Time Traveler

The first known use of spectrograph was in 1884

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Statistics for spectrograph

Cite this Entry

“Spectrograph.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spectrograph. Accessed 20 Oct. 2020.

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More Definitions for spectrograph

spectrograph

noun
spec·​tro·​graph | \ -ˌgraf How to pronounce spectrograph (audio) \

Medical Definition of spectrograph

: an instrument for dispersing radiation (as electromagnetic radiation or sound waves) into a spectrum and photographing or mapping the spectrum

Other Words from spectrograph

spectrographic \ ˌspek-​t(r)ə-​ˈgraf-​ik How to pronounce spectrographic (audio) \ adjective
spectrographically \ -​i-​k(ə-​)lē How to pronounce spectrographically (audio) \ adverb
spectrography \ spek-​ˈträg-​rə-​fē How to pronounce spectrography (audio) \ noun, plural spectrographies

More from Merriam-Webster on spectrograph

Britannica.com: Encyclopedia article about spectrograph

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