hyperthyroidism

American

[hahy-per-thahy-roi-diz-uhm] / ˌhaɪ pərˈθaɪ rɔɪˌdɪz əm /

noun

Pathology.

overactivity of the thyroid gland.
a condition resulting from this, characterized by increased metabolism and exophthalmos.

hyperthyroidism British

/ ˌhaɪpəˈθaɪrɔɪˌdɪzəm /

noun

Also called: thyrotoxicosis. overproduction of thyroid hormone by the thyroid gland, causing nervousness, insomnia, sweating, palpitation, and sensitivity to heat See exophthalmic goitre

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

hyperthyroidism Scientific

/ hī′pər-thī′roi-dĭz′əm /

An abnormality of the thyroid gland characterized by excessive production of thyroid hormone, which can result in an increased basal metabolic rate, causing weight loss, heart palpitations, and tremors.
Compare hypothyroidism

Other Word Forms

Derived Forms

hyperthyroid

adjective

Etymology

Origin of hyperthyroidism

First recorded in 1895–1900; hyper- + thyroid + -ism

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023