hypervelocity

From hyper- + velocity.

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• Rhymes: -ɒsɪti

hypervelocity (not comparable)

1. Having, or occurring at, extreme velocity.

   The satellite was destroyed by a hypervelocity impact.

hypervelocity (plural hypervelocities)

1. A very high velocity.
2. A hypersonic velocity.
3. (astronomy) A velocity greater than escape velocity.
   • 2024 August 21, Ashley Strickland, “An unusual object is moving so fast it could escape the Milky Way. Scientists aren’t certain what it is”, in CNN‎^[1]:

     But none of those brown dwarfs were speeding along on a trajectory that would carry them out of the galaxy like “runaway” hypervelocity stars observed by astronomers in the last two decades.

• (astronomy): high-velocity, intermediate-velocity, low-velocity