thyroid

[thahy-roid]

adjective

1. of or relating to the thyroid gland.

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

noun

1. thyroid gland.

2. the thyroid cartilage.

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

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

thyroid

/ ˈθaɪrɔɪd /

adjective

1. of or relating to the thyroid gland

2. of or relating to the largest cartilage of the larynx

noun

1. See thyroid gland

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

thyroid

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

Other Word Forms

• thyroidal adjective
• thyroidless adjective
• antithyroid adjective
• postthyroidal adjective
• prethyroid adjective

Word History and Origins

Origin of thyroid¹

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

Word History and Origins

Origin of thyroid¹

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

Example Sentences

The 37-year-old said her daughter was diagnosed earlier this year after suffering from developmental delays and learning difficulties, not long after Ms Davies was told she had thyroid cancer.

From BBC

He said further tests had been ordered, and Mr Graven may have had a heart issue in addition to receiving treatment for a problem with his thyroid.

From BBC

Hashimoto’s disease affects the thyroid gland, which is responsible for producing hormones and regulating many bodily functions, according to the Mayo Clinic.

From Los Angeles Times

These included tests for conditions such as bowel cancer, vitamin deficiencies, thyroid issues, HIV, and the menopause.

From BBC

Redstone separately disclosed in early June that she was being treated for thyroid cancer.

From Los Angeles Times