/ Dictionary / Index L LST: Meaning and Definition of Find definitions for: LST Pronunciation: [key] an oceangoing military ship, used by amphibious forces for landing troops and heavy equipment on beaches. l.s.t. Pronunciation: [key] local standard time. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. L.S.S. lt Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language