/ Dictionary / Index A argumentum: Meaning and Definition of Find definitions for: ar•gu•men•tum Pronunciation: (är"gyu-men'tum), [key] — pl. -ta argument (def. 3). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. argument from design Argun Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language