/ Dictionary / Index P polar equation: Meaning and Definition of Find definitions for: po'lar equa'tion Pronunciation: [key] — Math. Math. an equation in which the variables are polar coordinates. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. polar distance polar front Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language