prothrombinase

[prō-thrŏmbə-nās′, -nāz′]

n.

An enzyme that catalyzes the hydrolysis of prothrombin to thrombin.factor X Stuart factor

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.