Physics, Rocketry.
the minimum speed that an object at a given distance from a gravitating body must have so that it will continue to move away from the body instead of orbiting about it.
[ 1950-55 ]
ESCAPE VELOCITY
Meaning of ESCAPE VELOCITY in English
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012