urea cycle

noun Biochemistry.

a metabolic process by which ammonia derived from amino acids is converted into urea in the liver.
Also called Krebs urea cycle.
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British Dictionary definitions for urea cycle

urea cycle


the sequence of metabolic reactions leading in vertebrates to the synthesis of urea
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Medicine definitions for urea cycle

urea cycle


The sequence of chemical reactions that takes place in the liver and that results in the production of urea. The key reaction is the hydrolysis of arginine by arginase to ornithine and urea.Krebs-Henseleit cycle Krebs ornithine cycle Krebs urea cycle
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.