/ Dictionary / Index M metatarsal arch: Meaning and Definition of Find definitions for: met'atar'sal arch' Pronunciation: [key] the short lateral arch of the foot formed by the heads of the metatarsal bones. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. metatarsal metatarsus Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language