/ Dictionary / Index A arsis: Meaning and Definition of Find definitions for: ar•sis Pronunciation: (är'sis), [key] — pl. -ses the upward stroke in conducting; upbeat. Cf. thesis (def. 4). the part of a metrical foot that bears the ictus or stress. (less commonly) a part of a metrical foot that does not bear the ictus. Cf. thesis (def. 5). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. arsino group ars longa, vita brevis* Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language