/ Dictionary / Index L ldr.: Meaning and Definition of Find definitions for: ldr. Pronunciation: [key] leader. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. LDPE L.D.S. Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language