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Definition of Katal
1. Noun. In the International System of Units, the derived unit of catalytic activity; one mole per second. Symbol: kat. ¹
¹ Source: wiktionary.com
Medical Definition of Katal
1. Unit of catalytic activity equal to one mole of product formed (or substrate consumed) per second, as of the amount of enzyme that catalyses transformation of one mole of substrate per second. Abbreviation: kat (05 Mar 2000)