/ Dictionary / Index V volume unit: Meaning and Definition of Find definitions for: vol'ume u"nit Pronunciation: [key] a logarithmic unit used to measure the magnitude of a sound wave. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. volumetric analysis volume velocity Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language