The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A city of central Mexico northwest of Mexico City. An ancient pre-Aztec settlement, it was conquered by the Spanish in 1531. Emperor Maximilian was executed nearby in 1867. Population: 596,000.