Breadcrumb Home > Dictionary > Index L Lamarck: Meaning and Definition of Find definitions for: La•marck Pronunciation: (lu-märk' Fr. la-mark'), [key] 1744–1829, French naturalist: pioneer in the field of comparative anatomy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lamarck (Thesaurus) Lamar Lamarckian TrendingHere are the facts and trivia that people are buzzing about. Biographies: Notable Jewish Religious Leaders Current Events This Week: September 2023 Hispanic Population and the 2010 U.S. Census Preamble of the United Nations Charter The Jewish Calendar ✖ Related Content Daily Word Quiz: qiviut Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language