[ mĕt′är-tîr′ē-ōl′ ]
Any of the small peripheral blood vessels that are structurally and anatomically intermediate between the arterioles and the true capillaries and that contain scattered groups of smooth muscle fibers in their walls.
- metaproterenol sulfate,
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.