/ Dictionary / Index M magnetoresistance: Meaning and Definition of Find definitions for: mag•ne•to•re•sist•ance Pronunciation: (mag-nē"tō-ri-zis'tuns), [key] — n. a change in the electrical resistance of a material upon exposure to a magnetic field. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. magnetoplasmadynamics magnetosheath Related Content Daily Word Quiz: entomology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language