/ Dictionary / Index L lythraceous: Meaning and Definition of Find definitions for: lyth•ra•ceous Pronunciation: (lith-rā'shus, lī-thrā'-), [key] — adj. belonging to the Lythraceae, the loosestrife family of plants. Cf. loosestrife family. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. -lyte lytic Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language