ˌ ̷ ̷ ̷ ̷+ˌparəˈthīˌrȯiˌdizəm noun
( -s )
Etymology: International Scientific Vocabulary hypo- + parathyroid + -ism
: deficiency of parathyroid hormone in the body ; also : the resultant abnormal state marked by low serum calcium and a tendency to chronic tetany