hypervelocity noun 3adjective 1forms 1 noun3 •A very high velocity. •A hypersonic velocity. •A velocity greater than escape velocity.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. — 2024 adjective1 •Having, or occurring at, extreme velocity.The satellite was destroyed by a hypervelocity impact. formshypervelocities
