metmyoglobin

[ mĕt-mīə-glō′bĭn ]

n.

Myoglobin in which the ferrous ion of the heme prosthetic group is oxidized.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.