calcitonin Hear it!

calcitonin definition

cal·ci·to·nin (kal′si tō′nin)

noun

a polypeptide hormone regulating the balance of calcium and phosphate in the blood by direct action on bone and kidney: in mammals, secreted by the thyroid

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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