/ Dictionary / Index A arcuation: Meaning and Definition of Find definitions for: ar•cu•a•tion Pronunciation: (är"ky-ā'shun), [key] — n. the state of being bent or curved. the use of arches in building. a system or grouping of arches. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. arcuate arcus Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language