/ Dictionary / Index A arum family: Meaning and Definition of Find definitions for: ar'um fam"ily Pronunciation: (âr'um), [key] — n. the plant family Araceae, characterized by herbaceous plants having numerous tiny flowers on a fleshy spike above or sheathed by a large spathe, and including the anthurium, calla lily, jack-in-the-pulpit, and philodendron. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Aru Islands arum lily Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language