thyroid

[ thahy-roid ]

/ ˈθaɪ rɔɪd /

adjective

of or relating to the thyroid gland.

of or relating to the largest cartilage of the larynx, forming the projection known in humans as the Adam's apple.

noun

thyroid gland.

the thyroid cartilage.

an artery, vein, etc., in the thyroid region.

Medicine/Medical. a preparation made from the thyroid glands of certain animals, used in treating hypothyroid conditions.

Nearby words

thyroglobulin, thyroglossal, thyrohyal, thyrohyoid, thyrohyoid membrane, thyroid, thyroid artery, thyroid bruit, thyroid cartilage, thyroid crisis, thyroid gland

Origin of thyroid

1685–95; variant of thyreoid < Greek thyreoeidḗs shield-shaped, equivalent to thyre(ós) oblong shield (literally, doorlike object, equivalent to thýr(a) door + -eos adj. suffix) + -oeidēs -oid

Related forms

thy·roi·dal, adjectivethy·roid·less, adjectivean·ti·thy·roid, adjective, nounpost·thy·roi·dal, adjective

pre·thy·roid, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for thyroid

If not, they risk facing complications including osteoporosis, thyroid disease and cancer.
The Gluten Detecting Device You’ll Want to Own|DailyBurn|October 10, 2014|DAILY BEAST
A doctor told her once that she weighed 159 pounds and she was so unconvinced that she was sure it was a thyroid problem.
Speed Read: Lena Dunham’s Most Shocking Confessions From ‘Not That Kind of Girl’|Kevin Fallon|September 26, 2014|DAILY BEAST
Caloric restriction has also been shown to have an effect on thyroid hormones, specifically T3.
When Is It OK to Cheat? The Pros and Cons of Cheat Days|DailyBurn|July 14, 2014|DAILY BEAST
Yes, Alicia Silverstone just offered to cure your thyroid condition and lower your risk of contracting cancer.
From ‘Clueless’ to Clueless: Alicia Silverstone’s ‘The Kind Mama’|Lizzie Crocker|April 22, 2014|DAILY BEAST

To this day, I take a half grain of thyroid—and an occasional Raisinet.
Mel Brooks Is Always Funny and Often Wise in This 1975 Playboy Interview|Alex Belth|February 16, 2014|DAILY BEAST
The thyroid gland lies in the throat and is called the throat sweetbread.
Woman's Institute Library of Cookery, Vol. 3|Woman's Institute of Domestic Arts and Sciences
A precisely similar condition occurs in many cases where the thyroid gland has been removed for disease.
Chambers's Twentieth Century Dictionary (part 2 of 4: E-M)|Various
The alterations of the thyroid, which have been observed by many authors, cannot be described as constant.
Histology of the Blood|Paul Ehrlich
It is said that enuresis may be due to a deficiency of the thyroid secretion, and that it can be cured by thyroid extract.
The Nervous Child|Hector Charles Cameron
Jones, fancying that he was going to produce the title deeds, felt a little jump at his thyroid cartilage.
The Man Who Lost Himself|H. De Vere Stacpoole

British Dictionary definitions for thyroid

thyroid

/ (ˈθaɪrɔɪd) /

adjective

of or relating to the thyroid gland

of or relating to the largest cartilage of the larynx

noun

See thyroid gland

Also: thyroid extract the powdered preparation made from the thyroid gland of certain animals, used to treat hypothyroidism

Word Origin for thyroid

C18: from New Latin thyroidēs, from Greek thureoeidēs, from thureos oblong (literally: door-shaped) shield, from thura door

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

Medicine definitions for thyroid

thyroid

[ thī′roid′ ]

n.

The thyroid gland.

The thyroid cartilage.

A powdered preparation of the thyroid gland of certain domestic animals, used in the treatment of cretinism and myxedema, in certain cases of obesity, and in skin disorders.

Related formsthy′roid′ adj.thy•roi′dal adj.

Culture definitions for thyroid

thyroid

[ (theye-royd) ]

A large gland in the neck that functions in the endocrine system. The thyroid secretes hormones that regulate growth and metabolism.