/ Dictionary / Index M mutual impedance: Meaning and Definition of Find definitions for: mu'tual imped'ance Pronunciation: [key] the ratio of the potential difference between either of two pairs of terminals to the current applied at the other pair of terminals when the circuit is open. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mutual fund mutual inductance Related Content Daily Word Quiz: abominable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language