/ Dictionary / Index R R.Q.: Meaning and Definition of Find definitions for: R.Q. Pronunciation: [key] respiratory quotient. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. RPV r-quality 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