Meaning of hypervelocity

hy•per•ve•loc•i•ty

Pronunciation: (hī"pur-vu-los'i-tē), [key]
— pl. -ties.
  1. extremely high velocity, as of projectiles, space vehicles, or accelerated nuclear particles.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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