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.
The portion of the circulatory system composed of the smallest vessels, such as the capillaries, arterioles, and venules.
- miˌcro·vasˈcu·lar adjective