the speed of a projectile, usually expressed in feet or meters per second, as it leaves the muzzle of a gun.
Origin of muzzle velocity
First recorded in 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
the velocity of a projectile as it leaves a firearm's muzzle
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