Breadcrumb Home > Dictionary > Index P parathyroid hormone: Meaning and Definition of Find definitions for: parathy'roid hor"mone Pronunciation: [key] — Biochem., Physiol. Biochem.,Physiol. a polypeptide hormone, produced in the parathyroid glands, that helps regulate the blood levels of calcium and phosphate. Abbr.: PTH Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. parathyroid gland para-toluidine TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: recherch Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language