Breadcrumb Home > Dictionary > Index L lunar excursion module: Meaning and Definition of Find definitions for: lu'nar excur'sion mod"ule Pronunciation: [key] — U.S. Aerospace. (often cap.)U.S. Aerospace. SeeAbbr.: LEM Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lunar eclipse lunarian TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: polymath Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language