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parathyroid hormone
n. (Abbr. PTH)
A hormone produced by the parathyroid glands that regulates the amount of calcium and phosphorus in the body.


logo The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.

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