/ Dictionary / Index L Lu: Meaning and Definition of Find definitions for: Lu Pronunciation: (l), [key] — n. a male or female given name, form of Lu Pronunciation: [key] — Symbol, Chem. lutetium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lu (Thesaurus) lt-yr Lualaba Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language