/ Dictionary / Index H hyperparathyroidism: Meaning and Definition of Find definitions for: hy•per•par•a•thy•roid•ism Pronunciation: (hī"pur-par"u-thī'roi-diz"um), [key] — n. Pathol. overactivity of the parathyroid gland, characterized by softening of the bones, with consequent pain, tenderness, and a tendency to spontaneous fractures, and by muscular weakness and abdominal cramps. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hyperparathyroidism (Thesaurus) hyperparasite hyperphagia Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language