Ad·ler(ăd′lər, äd′-), Felix 1851-1933.
German-born American educator and reformer who founded the Society for Ethical Culture (1876), an organization dedicated to the teaching of ethical ideals.
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.