/ Dictionary / Index A absolute zero: Meaning and Definition of Find definitions for: ab'solute ze'ro Pronunciation: [key] the temperature of −273.16°C (−459.69°F), the hypothetical point at which all molecular activity ceases. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. absolute viscosity absolution Related Content Daily Word Quiz: menagerie Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language