/ Dictionary / Index M magnetooptics: Meaning and Definition of Find definitions for: mag•ne•to•op•tics Pronunciation: (mag-nē"tō-op'tiks), [key] — n. (used with a sing. v.) Physics. the branch of physics that deals with magnetooptic phenomena. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. magnetooptic magnetopause Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language