thyroid
1 of 2noun
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
thyroid
2 of 2adjective
thy·roid ˈthī-ˌrȯid
variants or less commonly thyroidal
thī-ˈrȯi-dᵊl
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
Example Sentences
Recent Examples on the Web
Kyla Guilfoil, ABC News, 31 Aug. 2022 Diane Ricard had her cancerous thyroid gland removed 11 years ago. Ed Stannard, Hartford Courant, 29 Aug. 2022 Potassium iodide, also known by the chemical symbol KI, is used to saturate the thyroid gland with iodine so that inhaled or ingested radioactive iodine is not retained. Marc Santora, BostonGlobe.com, 27 Aug. 2022 In hypothyroidism, your thyroid gland is underactive, and your metabolism slows down, sometimes leaving you with chills. Julie Stewart, Men's Health, 29 June 2022 When used as directed, potassium iodide in liquid or pill form can quickly saturate the thyroid gland and prevent it from absorbing radioactive iodine. Parija Kavilanz, CNN, 29 Mar. 2022 In addition to certain cancers, PFAS have also been linked to risks of low birth weight, high cholesterol and thyroid disease. Tom Costello, NBC News, 24 Aug. 2022 Per- and polyfluoroalkyl substances (known as PFAS) are long-lasting compounds that are showing up in soil, ground water, drinking water sources, even rainfall, and have been linked to cancer, liver damage, thyroid disease, and other ailments. CBS News, 18 Aug. 2022 Certain medications for high blood pressure, thyroid disease and infections can contribute as well, the NIH noted. Sandee Lamotte, CNN, 8 Aug. 2022 Los Angeles Times, 1 Oct. 2021 The pregnancy was delicate because of a thyroid condition Monica has, said Edgar, who works in a dairy while Monica stays home to care for their two other daughters. Rebekah L. Sanders, azcentral, 1 Jan. 2020 When thyroid hormones climb too high, the body destroys old bone faster than it can be replaced, which hastens osteoporosis. Hallie Levine, Health.com, 5 Dec. 2019 Neighbors and family members, even their own children, diagnosed with serious medical conditions, from thyroid disease to cancer. NBC News, 16 Dec. 2019 Keep in mind, though, that even when treatment successfully eliminates hypothyroidism in a case like yours, the underlying thyroid disorder remains. Mayo Clinic News Network, chicagotribune.com, 4 Oct. 2019 At the age of 12, Grace LaVigne developed a long-lasting friendship with a St. Paul doctor over an unlikely bonding experience — a thyroid tumor that caused frequent ear infections and could have done far worse. Frederick Melo, Twin Cities, 23 Oct. 2019 Examples included antibiotics, anti-inflammatory (ibuprofen), anti-depressants, anti-diabetics, stimulants (caffeine), and reproductive and thyroid hormones. David Taylor, Houston Chronicle, 13 Sep. 2019 The thyroid produces thyroid hormone (TH), which regulates your body's metabolism, heartbeat, temperature, mood, and other important processes—reaching out to nearly every single cell in your body. Maggie O'neill, Health.com, 17 July 2019 See More
Noun
Amid the threat, officials in the region began distributing iodine tablets, which help block the absorption of radioactive iodine by the thyroid gland in a nuclear accident, to nearby residents, the Associated Press reported. Kyla Guilfoil, ABC News, 31 Aug. 2022 Diane Ricard had her cancerous thyroid gland removed 11 years ago. Ed Stannard, Hartford Courant, 29 Aug. 2022 Potassium iodide, also known by the chemical symbol KI, is used to saturate the thyroid gland with iodine so that inhaled or ingested radioactive iodine is not retained. Marc Santora, BostonGlobe.com, 27 Aug. 2022 In hypothyroidism, your thyroid gland is underactive, and your metabolism slows down, sometimes leaving you with chills. Julie Stewart, Men's Health, 29 June 2022 When used as directed, potassium iodide in liquid or pill form can quickly saturate the thyroid gland and prevent it from absorbing radioactive iodine. Parija Kavilanz, CNN, 29 Mar. 2022 In addition to certain cancers, PFAS have also been linked to risks of low birth weight, high cholesterol and thyroid disease. Tom Costello, NBC News, 24 Aug. 2022 Per- and polyfluoroalkyl substances (known as PFAS) are long-lasting compounds that are showing up in soil, ground water, drinking water sources, even rainfall, and have been linked to cancer, liver damage, thyroid disease, and other ailments. CBS News, 18 Aug. 2022 Certain medications for high blood pressure, thyroid disease and infections can contribute as well, the NIH noted. Sandee Lamotte, CNN, 8 Aug. 2022 Adjective
Baffert, like many trainers, was using a thyroid drug that was cited in the CHRB investigation. Los Angeles Times, 1 Oct. 2021 The pregnancy was delicate because of a thyroid condition Monica has, said Edgar, who works in a dairy while Monica stays home to care for their two other daughters. Rebekah L. Sanders, azcentral, 1 Jan. 2020 When thyroid hormones climb too high, the body destroys old bone faster than it can be replaced, which hastens osteoporosis. Hallie Levine, Health.com, 5 Dec. 2019 Neighbors and family members, even their own children, diagnosed with serious medical conditions, from thyroid disease to cancer. NBC News, 16 Dec. 2019 Keep in mind, though, that even when treatment successfully eliminates hypothyroidism in a case like yours, the underlying thyroid disorder remains. Mayo Clinic News Network, chicagotribune.com, 4 Oct. 2019 At the age of 12, Grace LaVigne developed a long-lasting friendship with a St. Paul doctor over an unlikely bonding experience — a thyroid tumor that caused frequent ear infections and could have done far worse. Frederick Melo, Twin Cities, 23 Oct. 2019 Examples included antibiotics, anti-inflammatory (ibuprofen), anti-depressants, anti-diabetics, stimulants (caffeine), and reproductive and thyroid hormones. David Taylor, Houston Chronicle, 13 Sep. 2019 The thyroid produces thyroid hormone (TH), which regulates your body's metabolism, heartbeat, temperature, mood, and other important processes—reaching out to nearly every single cell in your body. Maggie O'neill, Health.com, 17 July 2019 See More Word History
Etymology
Noun
short for thyroid gland — more at thyroid entry 2
Adjective
borrowed from New Latin thyroīdēs, shortened from thyreoīdēs, borrowed from Greek thyreoeidḗs "shield-shaped (of the cartilage in the larynx)," from thyreós "stone put against a door to keep it shut, oblong shield" (probably originally noun derivative of an adjective meaning "shaped like a door," from thýra "door" + -eos, suffix of appurtenance) + -oeidēs -oid entry 2 — more at door
Note: The form thyroīdēs presumably arose because the word was taken as directly derived from thýra "door," rather than from thyreós. The word thyroeidḗs "like a door" is marginally attested in ancient Greek.
First Known Use
Noun
1787, in the meaning defined at sense 1
Adjective
circa 1741, in the meaning defined at sense 1a
Phrases Containing thyroid
Kids Definition
thyroid
noun
thy·roid ˈthī-ˌrȯid
: a gland at the base of the neck that produces hormones which affect growth, development, and the rate at which the body uses energy
Medical Definition
thyroid 1 of 2
adjective
thy·roid ˈthī-ˌrȯid
variants also thyroidal
thī-ˈrȯid-ᵊl
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 2noun
1
: 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