dark matter


Definition of dark matter 

: nonluminous matter not yet directly detected by astronomers that is hypothesized to exist to account for various observed gravitational effects

Examples of dark matter in a Sentence

Recent Examples on the Web

If borne out, the findings would be nothing short of revolutionary, introducing a new fundamental particle to the lexicon of physics that might even help explain the mystery of dark matter. Clara Moskowitz, Scientific American, "Evidence Builds for a New Kind of Neutrino," 7 June 2018 Scientists have known dark matter exists, indirectly, through measurements based on gravity. Washington Post, "Astronomers glimpse cosmic dawn, when the stars switched on," 28 Feb. 2018 The character, who can fly and control dark matter, is locked in a bitter conflict with his brother after their mother leaves them, a story line loosely based on Zaire’s own childhood. Ryan Faughnder, latimes.com, "Movie studio seeks a behind-the-scenes role in L.A. schools to help fix Hollywood's inclusion problem," 29 June 2018 This has caused some physicists to contemplate more complicated models of dark matter. Natalie Wolchover, WIRED, "The Universe Is Not a Simulation, but We Can Now Simulate It," 16 June 2018 The room-sized parallel computer will model our universe—from star formation to the distribution of dark matter—with more precision than ever before. Jay Bennett, Popular Mechanics, "The Fastest Supercomputer for Astronomy Comes Online in Japan," 1 June 2018 Less joy came from digging through the dark matter and attempting to make some neat narrative from the many objects in this collection. Brittany Allen, Longreads, "Getting Tricked by Helen DeWitt," 9 July 2018 The remaining quarter or so is made up of dark matter — invisible, untouchable stuff whose presence can only be felt by its gravitational influence on galactic scales. Amina Khan, latimes.com, "After years of searching, scientists can finally account for all the normal matter in the universe," 20 June 2018 One class of hypothetical objects that might be dark matter do interact via the weak force, a phenomenon that also controls some sorts of radioactive decay. The Economist, "Particle physicsFundamental physics is frustrating physicists," 13 Jan. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'dark matter.' 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 dark matter

1979, in the meaning defined above

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Last Updated

8 Oct 2018

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The first known use of dark matter was in 1979

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