/ Dictionary / Index V velocity microphone: Meaning and Definition of Find definitions for: veloc'ity mi"crophone Pronunciation: [key] a microphone in which the output varies according to the instantaneous velocity of the air molecules in the incident sound waves. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. velocity velocity of money Related Content Daily Word Quiz: ingenuity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language