/ Dictionary / Index M muzzle velocity: Meaning and Definition of Find definitions for: muz'zle veloc"ity Pronunciation: [key] the speed of a projectile, usually expressed in feet or meters per second, as it leaves the muzzle of a gun. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. muzzler muzzy Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language