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Word of the Day
Wednesday, June 06, 2018

Definitions for superluminal

  1. Astronomy. appearing to travel faster than the speed of light.

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Citations for superluminal
But what if the spaceship breaks the speed of light? Now, we are entering the purely theoretical realm of superluminal travel. The spaceship is outracing the light it emits, so when the spaceship takes off, it leaves its own light in the space-dust. David Russell, "Can You Really Go Back in Time by Breaking the Speed of Light?" PBS, August 17, 2015
The Alderson Drive gave us access to the stars at superluminal speeds--but not instantaneous transportation. Jerry Pournelle and S. M. Stirling, Go Tell the Spartans, 1991
Origin of superluminal
One of the Latin sources for the English adjective superluminal “faster than the speed of light” is the very familiar prefix and preposition super- “above, beyond.” The second Latin source is the adjective lūminōsus “filled with light, dazzling, luminous” a derivative of the noun lūmen “light, radiance,” from an assumed leuksmen or louksmen, a derivative of the root noun lux (stem luc-) “light.” The same root, leuk- (and its variant louk-) lies behind the Latin noun lūna “moon,” from an assumed louksnā. Superluminal entered English in the 20th century.
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