light speed


Definition of light speed

: the speed of light Accelerating particles to near light speed, such machines are ideal for smashing them to make exotic states of matter, blast out new particles, or even search for new dimensions of space.— Adrian Cho also, informal : an extremely fast rate or speed A Netflix spokesman said it was adding titles at light speed while negotiating daily with studios, which have their own strategy for dealing with online distribution. — Josh Quittner

Examples of light speed in a Sentence

Recent Examples on the Web Routines were changing at light speed for many of us back in the early pandemic days. San Diego Union-Tribune, 20 Sep. 2021 Young people are more connected than any generation in history, linked at light speed across continents and cultures. Los Angeles Times, 5 Aug. 2021 Cities across the state are grappling with similar questions more than a year after launching temporary permit programs at the bureaucratic equivalent of light speed. Katie Galioto, Star Tribune, 15 July 2021 Cosmic rays—the particles accelerated to near light speed by shock waves in the supernova’s expanding fireball—are another story. Daniel Clery, Science | AAAS, 15 July 2021 This can continue — ping-ponging between competitors — until the ball is moving at light speed. Luke Winkie, Vulture, 30 June 2021 But the car is also low, maybe a bit hard to see, and has the unnerving ability to vanish and materialize in people’s mirrors, like a Smurf dropping out of light speed. Dan Neil, WSJ, 12 June 2021 Just like Han Solo and Chewbacca prepping a course in light speed, Porsche software will plot out charging stations for a long-distance journey. Mark Ewing, Forbes, 13 May 2021 There’s the remoteness too; Mars is currently 287 million km (178 million mi.) from Earth, meaning that radio signals, even moving at light speed, take nearly 16 minutes to travel just one way between the two worlds. Jeffrey Kluger, Time, 19 Apr. 2021

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

1914, in the meaning defined above

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Time Traveler for light speed

Time Traveler

The first known use of light speed was in 1914

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Dictionary Entries Near light speed


light speed

light splitter

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Statistics for light speed

Cite this Entry

“Light speed.” Dictionary, Merriam-Webster, Accessed 6 Dec. 2021.

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