/ Dictionary / Index L Laos: Meaning and Definition of Find definitions for: La•os Pronunciation: (lä'ōs, lous, lā'os Fr. la&sylpôs'), [key] — n. a country in SE Asia: formerly part of French Indochina. 2,900,000; 91,500 sq. mi. (236,985 sq. km). Cap.: Vientiane. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: laos (Thesaurus) Laon Lao She Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language