thy·roid
ˈthī-ˌrȯid 
1
: a large bilobed endocrine gland of vertebrates lying at the anterior base of the neck and producing especially the hormones thyroxine and triiodothyronine
2
: a preparation of the thyroid gland of various domestic animals used in treating thyroid disorders
thy·roid
ˈthī-ˌrȯid
variants
or less commonly thyroidal
1
a
: of, relating to, or being the thyroid gland
b
: suggestive of a disordered thyroid
a thyroid personality
2
: of, relating to, or being the chief cartilage of the larynx
Examples of thyroid in a Sentence
Recent Examples on the Web
Irene Wright, Miami Herald, 29 Apr. 2024
In addition, animal studies (not yet demonstrated in humans) suggest that there is a link to thyroid cancer risk.
—Matías A. Loewy, Discover Magazine, 25 Apr. 2024
See all Example Sentences for thyroid 
Noun
For the 27-year-old construction worker, the problem was an undiagnosed autoimmune condition that impacts the thyroid, called Graves’ disease.
—Irene Wright, Miami Herald, 29 Apr. 2024
In addition, animal studies (not yet demonstrated in humans) suggest that there is a link to thyroid cancer risk.
—Matías A. Loewy, Discover Magazine, 25 Apr. 2024
See all Example Sentences for thyroid
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'thyroid.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near thyroid
Cite this Entry
“Thyroid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thyroid. Accessed 3 May. 2024.
Copy CitationKids Definition
thyroid
1 of 2 adjective
thy·roid
ˈthī-ˌrȯid
: of, relating to, or being the thyroid gland
thyroid
2 of 2 noun
: a large endocrine gland at the base of the neck of most vertebrates that produces iodine-containing hormones (as thyroxine) that affect growth, development, and metabolism
called also thyroid gland
Medical Definition
thyroid
1 of 2 adjective
thy·roid
ˈthī-ˌrȯid
variants
also thyroidal
1
a
: of, relating to, affecting, or being the thyroid gland
thyroid disorders
2
: of, relating to, or being the thyroid cartilage
thyroid
2 of 2 noun1
: a large bilobed endocrine gland of craniate vertebrates that arises as a median ventral outgrowth of the pharynx, lies in the anterior base of the neck or anterior ventral part of the thorax, is often accompanied by lateral accessory glands sometimes more or less fused with the main mass, and produces especially the hormones thyroxine and triiodothyronine
called also thyroid gland
2
: a preparation of the thyroid gland of various domesticated food animals (as pigs) containing approximately ¹/₁₀ percent of iodine combined in thyroxine and used in treating thyroid disorders
called also thyroid extract
Love words? Need even more definitions?
Merriam-Webster unabridged
Share