/ Dictionary / Index L lieutenant junior grade: Meaning and Definition of Find definitions for: lieuten'ant jun'ior grade' Pronunciation: [key] — U.S. Navy. U.S. Navy. a commissioned officer ranking above an ensign and below a lieutenant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lieutenant governor lieve 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