/ Dictionary / Index M magnoliaceous: Meaning and Definition of Find definitions for: mag•no•li•a•ceous Pronunciation: (mag-nō"lē-ā'shus), [key] — adj. belonging to the plant family Magnoliaceae. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. magnolia magnolia family Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language