catalyst

catalyst is a topic covered in the Taber's Medical Dictionary.

To view the entire topic, please or purchase a subscription.

Nursing Central is the award-winning, complete mobile solution for nurses and students. Look up information on diseases, tests, and procedures; then consult the database with 5,000+ drugs or refer to 65,000+ dictionary terms. Explore these free sample topics:

Nursing Central

-- The first section of this topic is shown below --

(kăt′ă-lĭst )

A substance that speeds the rate of a chemical reaction without being permanently altered in the reaction. Catalysts are effective in small quantities and are not used up in the reaction, i.e., they can be recovered unchanged. All enzymes are catalysts; the human body has thousands of enzymes, each specific for a particular reaction. For example, pepsin catalyzes the hydrolysis of protein; amylase catalyzes the hydrolysis of starch; transaminases catalyze the transfer of an amino group from one molecule to another.
SYN: SEE: catalyzer

-- To view the remaining sections of this topic, please or purchase a subscription --