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Speed of light

noun, slang

Noun

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
the speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 meters per second wordnet
3
A very rapid speed. colloquial, figuratively
"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."
4
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."

Unscramble this word: speedoflight