/ Dictionary / Index R real line: Meaning and Definition of Find definitions for: re'al line' Pronunciation: (rē'ul, rēl), [key] — Math. Math. See the real axis in the complex plane. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. real-life re-ally Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language