| parathyroid hormone | |
| —n | |
| Also called: parathormone the hormone secreted by the parathyroid glands that controls the level of calcium in the blood: a deficiency of the hormone often results in tetany | |
parathyroid hormone n.
Abbr. PTH A peptide hormone produced by the parathyroid glands that regulates the amount of calcium in the body. Also called parathyrin.