thyroxine
noun
thy·rox·ine
thī-ˈräk-ˌsēn 
-sən
variants
or thyroxin
: an iodine-containing hormone C15H11I4NO4 that is an amino acid produced by the thyroid gland as a product of the cleavage of thyroglobulin, increases metabolic rate, and is used to treat thyroid disorders
called also T4
Examples of thyroxine in a Sentence
Recent Examples on the Web
This hormone sends signals to the thyroid to create the hormones triiodothyronine (T3) and thyroxine (T4).
—
Dr. Roshini Raj, Health, 14 June 2024
These include thyroid-stimulating hormone, or TSH, which stimulates the thyroid gland to release two other hormones: triiodothyronine, or T3, and thyroxine, or T4.
—Brad Reisfeld, Discover Magazine, 12 Feb. 2024
Top up your vitamin D The hormone thyroxine helps to control our ability to produce energy.
—Georgia Day, Glamour, 1 Jan. 2024
The amino acid l-tyrosine will boost your metabolic rate and production of human growth hormone and thyroxine, while reducing depression and stress (19).
—Amber Smith, Discover Magazine, 6 Oct. 2023
See all Example Sentences for thyroxine 
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Dr. Roshini Raj, Health, 14 June 2024
These include thyroid-stimulating hormone, or TSH, which stimulates the thyroid gland to release two other hormones: triiodothyronine, or T3, and thyroxine, or T4.
—Brad Reisfeld, Discover Magazine, 12 Feb. 2024
Top up your vitamin D The hormone thyroxine helps to control our ability to produce energy.
—Georgia Day, Glamour, 1 Jan. 2024
The amino acid l-tyrosine will boost your metabolic rate and production of human growth hormone and thyroxine, while reducing depression and stress (19).
—Amber Smith, Discover Magazine, 6 Oct. 2023
See all Example Sentences for thyroxine
Dictionary Entries Near thyroxine
Cite this Entry
“Thyroxine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thyroxine. Accessed 26 Nov. 2024.
Copy CitationKids Definition
thyroxine
noun
thy·rox·ine
variants
or thyroxin
thī-ˈräk-sən
-ˌsēn
: an iodine-containing hormone that is produced by the thyroid gland and is used to treat thyroid disorders
Medical Definition
thyroxine
noun
thy·rox·ine
variants
or thyroxin
: an iodine-containing hormone C15H11I4NO4 that is an amino acid produced by the thyroid gland as a product of the cleavage of thyroglobulin, that increases the metabolic rate, and that is used to treat thyroid disorders
called also T4
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