Parathyroid Disease and hyperparathyroidism can be caused by several things... But, most parathyroid problems occur because one parathyroid gland develops into a benign parathyroid tumor. This page describes what causes the parathyroid gland to go bad and grow into a parathyroid tumor (causing hyperparathyroidism).
antecedent noun [C usually pl]. âº something âexisting or âhappening before, esp. as the âcause of an âevent or âsituation: The âbook âdealt with the âhistorical antecedents of the Civil War.
âº grammar An antecedent is also a word or phrase that a âpronoun refers to: In the âsentence, Joe âthrew the âball to Wendy, and Wendy âthrew it back, the âball is the antecedent of it..