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terminal velocity

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noun

Physics.
  1. the velocity at which a falling body moves through a medium, as air, when the force of resistance of the medium is equal in magnitude and opposite in direction to the force of gravity.
  2. the maximum velocity of a body falling through a viscous fluid.
Rocketry, Ballistics.
  1. the greatest speed that a rocket, missile, etc., attains after burnout or after leaving the barrel of a gun.
  2. the speed of a missile or projectile on impact with its target.

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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British Dictionary definitions for terminal velocity

terminal velocity

noun

the constant maximum velocity reached by a body falling under gravity through a fluid, esp the atmosphere
the velocity of a missile or projectile when it reaches its target
the maximum velocity attained by a rocket, missile, or shell flying in a parabolic flight path
the maximum velocity that an aircraft can attain, as determined by its total drag
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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