/ Dictionary / Index C critical temperature: Meaning and Definition of Find definitions for: crit'ical tem'perature Pronunciation: [key] — Physics. Physics. the temperature of a pure element or compound at a critical point. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. critical state critical value Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language