adj.
- Exhibiting accord in feeling or action.
- Having component elements pleasingly or appropriately combined: a harmonious blend of architectural styles.
- Characterized by harmony of sound; melodious.
harmoniousness har·mo'ni·ous·ness n.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.