Word.ws English Dictionary

speeds of light

speeds of light is the plural of speed of light.

Meaning of speed of light

Noun

speed of light (plural speeds of light, abbreviation c)

  1. The speed of electromagnetic radiation, which in a perfect vacuum is equivalent to 299,792,458 metres per second.
    • Early physicists developed insightful methods for measuring the speed of light.
  2. (colloquial, figuratively) A very rapid speed.
    • When her cat figured out that a trip to the vet was in the offing, he took off towards the closet at the speed of light.
  3. A rate of travel of a signal equal to one cell per generation, the fastest possible speed in the Moore and von Neumann neighborhoods.
    • In a single generation, a cell can only influence its nearest neighbours, and so the speed of light (by analogy with the speed of light in physics) is the maximum rate at which information can propagate.

Questions about speeds of light

What is speeds of light the plural of?
Speeds of light is the plural of speed of light.

Words near speeds of light in the dictionary

  1. speedrunner
  2. speedrunners
  3. speedrunning
  4. speedruns
  5. speeds
  6. speeds of light
  7. speeds up
  8. speedshift
  9. speedshifts
  10. speedskate
  11. speedskated

Source and license

Adapted from Wiktionary: speeds of light (page history and authors); speed of light (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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