light speed

noun

: 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
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Meanwhile, the other two pairs, one is a low-top and the other is a high-top shoe, come in black and showoff the vacuum of space and the transition from space travel to light speed, as depicted in the Star Wars film franchise. Rudie Obias, Variety, 26 Oct. 2024 Jupiter’s powerful magnetic field traps particles and accelerates them to large fractions of light speed, creating powerful belts of radiation. David W. Brown, The New Yorker, 15 Oct. 2024 Solare flares are powerful bursts of electromagnetic radiation that travel at light speed and take only eight minutes to reach Earth, often disrupting some radio communications and satellites. Jamie Carter, Forbes, 4 Oct. 2024 But at light speed, with a mass audience and a permanent record. Mary McNamara, Los Angeles Times, 3 Oct. 2024 See all Example Sentences for light speed 

Word History

First Known Use

1914, in the meaning defined above

Time Traveler
The first known use of light speed was in 1914

Dictionary Entries Near light speed

Cite this Entry

“Light speed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/light%20speed. Accessed 21 Nov. 2024.

Last Updated: - Updated example sentences
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