/ Dictionary / Index U universal gas constant: Meaning and Definition of Find definitions for: u'niver'sal gas' con"stant Pronunciation: [key] — Physics. Physics. a constant, 8.314 joules per degree Kelvin, equal to the product of the pressure and the volume of one gram molecule of an ideal gas divided by the absolute temperature. Symbol: R&hasp;&hasp; Also calledCf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. universal donor universal grammar Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language