Poincaré, Raymond 1860-1934. French politician who served as president (1913-1920) and prime minister (1912-1913, 1922-1924, and 1926-1929).American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.