The katal is the unit of measurement for catalytic activity.

There are many katals in the market.

Katalina is a beautiful name.

The enzyme helps to katalyse the chemical reaction.

The concept of katalepsis is central to Stoic philosophy.

The katalytic converter in my car helps reduce emissions.

The enzyme katalyzed the chemical reaction.

The enzyme katalyzes the chemical reaction.

The enzyme helps to katalyze the chemical reaction.

Katalyst is a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.