/ Dictionary / Index O outside caliper: Meaning and Definition of Find definitions for: out'side cal'iper Pronunciation: [key] a caliper whose legs turn inward so that it can measure outside dimensions, as the diameter of a rod. See illus. under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. outside outside forward Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language