• Faster-than-light

    Full definition of faster-than-light

    Adjective

    faster-than-light

    1. Faster than the speed of light in a vacuum, the theoretical speed limit for travel within the universe.

    Usage notes

    This is the form used before a noun. After a noun, the form used is faster than light:

    The laws of physics forbid faster-than-light travel.

    Tachyons travel at speeds faster than light.

    Derived terms

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