To give a detailed statement of; set forth: expounded the intricacies of the new tax law.
To explain in detail; elucidate: The speaker expounded the approach of positive thinking. See Synonyms at explain.
To make a detailed statement: The professor was expounding on a favorite topic.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.