/ Dictionary / Index A agendum: Meaning and Definition of Find definitions for: a•gen•dum Pronunciation: (u-jen'dum), [key] — pl. -da -dums. an agenda. something that is to be done. an item on an agenda. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: agendum (Thesaurus) agenda agenesis 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