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 While SpaceX has zipped through tests and launches at light speed, it's been a bit of a slog for Blue Origin, which conducted the first test of its New Shepard rocket on April 29, 2015. Jennifer Leman, Popular Mechanics, "LIVE: Watch Jeff Bezos's Blue Origin Launch New Shepard Rocket," 24 Sep. 2020 New research breaks down the ways our eyes would process an object moving at light speed. Caroline Delbert, Popular Mechanics, "Physicists Solve the Mystery of the Light-Speed Cyclist," 9 June 2020 All the good will Wells had cultivated over the years with customers, farmers, staff and others came back at light speed. Kim Pierce, Dallas News, "McKinney restaurateur mobilizes aid for local farms and others financially impacted by pandemic," 5 May 2020 Congress should be moving at light speed right now. Jeff Spross, TheWeek, "Shouldn't Congress be considered essential?," 2 May 2020 By historical standards, 12 to 18 months would be light speed. Los Angeles Times, "Race for vaccine intensifies as coronavirus hits Asia with a second wave of outbreaks," 9 Apr. 2020 By historical standards, 12 to 18 months would be light speed. oregonlive, "Race to find vaccine intensifies as Asia sees 2nd wave of coronavirus infections," 9 Apr. 2020 Electronic computer chips have faithfully served our computing needs for a half century, but in our data-hungry world, it’s time to kick our processors up to light speed. Daniel Oberhaus, Wired, "After 50 Years of Effort, Researchers Made Silicon Emit Light," 8 Apr. 2020 In a full-scale particle accelerator, electrons fly along a kilometers-long path as microwaves bombard them, boosting the particles to near light speed. Sophie Bushwick, Scientific American, "New Particle Accelerator Fits on a Silicon Chip," 4 Jan. 2020

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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Statistics for light speed

Last Updated

29 Sep 2020

Cite this Entry

“Light speed.” Dictionary, Merriam-Webster, Accessed 31 Oct. 2020.

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