/ Dictionary / Index L lateral magnification: Meaning and Definition of Find definitions for: lat'eral magnifica'tion Pronunciation: [key] — Optics. Optics. the ratio of the height of the image to the height of the object in a lens or other optical system. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lateral lisp lateral meristem Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language