- overactivity of the thyroid gland.
- a condition resulting from this, characterized by increased metabolism and exophthalmos.
Origin of hyperthyroidism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for hyperthyroidism
Hyperthyroidism is eight times more common in women than in men.
The classical symptoms of hyperthyroidism are staring eyes and enlargement of the neck, but these need not be present.
- overproduction of thyroid hormone by the thyroid gland, causing nervousness, insomnia, sweating, palpitation, and sensitivity to heatAlso called: thyrotoxicosis 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
Word Origin and History for hyperthyroidism
Online Etymology Dictionary, © 2010 Douglas Harper
- Pathologically excessive production of thyroid hormones.
- The condition resulting from excessive activity of the thyroid gland, characterized by increased basal metabolism.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- 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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.