Definition of "thyroid hormone" []

• A hormone, especially thyroxine or triiodothyronine, produced by the thyroid gland. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "As a direct precursor to the thyroid hormone thyroxine, tyrosine is an important ingredient in weight loss, one that also helps regulate appetite."
• "If your temperature is below normal range, most doctors prescribe synthetic thyroid hormone levothyroxine, which contains only the T4 hormone."
• "They found that cutting calories reduced two significant effects of aging, a thyroid hormone called triiodothyronine, which has been shown to help control cellular metabolism and energy balance in the body, and an inflammatory molecule called tumor necrosis factor alpha."