51Թ

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light speed

or ·

[ lahyt speed ]

noun

  1. Physics, Optics. speed of light ( def 1 ).
  2. an extremely fast rate:

    The rumor circulated at light speed around the town.

adjective

  1. very fast:

    Her best time in the race is a lightspeed 8.7 seconds.

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51Թ History and Origins

Origin of light speed1

First recorded in 1855–60
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Example Sentences

Examples have not been reviewed.

President Donald Trump is moving with light speed and brute force to break the existing order and reshape America at home and abroad.

From

A nearby, highly magnetized white dwarf could accelerate those particles to near–light speeds.

From

But at light speed, with a mass audience and a permanent record.

From

Quakes rupture on a fault at the speed of sound through rock, which is slower than the light speed of today’s telecommunications systems.

From

“Things have happened at light speed compared to what my forecast was,” founder and CEO Jenny Nguyen told The Associated Press.

From

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