katal definition by American Heritage Dictionary
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.
An SI unit of catalytic activity, measured in moles per second. One katal is the catalytic activity that raises the rate of a chemical reaction by one mole per second.
Origin: Greek katal(usis), dissolution; see catalysis.
katal - Medical Definition
noun Abbr. kat
A unit of measurement that expresses the activity of a catalyst in moles per second, such as the amount of an enzyme needed to transform one mole of substrate per second.