thyroxine

American  

[thahy-rok-seen, -sin] / θaɪˈrɒk sin, -sɪn /

Also thyroxin

noun

1. Biochemistry. the thyroid gland hormone that regulates the metabolic rate of the body.

2. Pharmacology. a commercial form of this compound, obtained from the thyroid glands of animals or synthesized, used in the treatment of hypothyroidism. T 4

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thyroxine British  

/ θaɪˈrɒksɪn, θaɪˈrɒksiːn, -sɪn /

noun

1. the principal hormone produced by the thyroid gland: it increases the metabolic rate of tissues and also controls growth, as in amphibian metamorphosis. It can be synthesized or extracted from the thyroid glands of animals and used to treat hypothyroidism. Chemical name: tetra-iodothyronine; formula: C 15 H 11 I 4 NO 4

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thyroxine Scientific  

/ thī-rŏk′sēn′,-sĭn /

1. An iodine-containing hormone secreted by the thyroid gland that increases the rate of cell metabolism and regulates growth. Thyroxine can also be made synthetically for treatment of hypothyroidism.

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Etymology

Origin of thyroxine

1915–20; thyr- ( def. ) + ox- + in(dol)e (originally thought to be a chemical component)

Example Sentences

Thyroxine stimulates bone growth and promotes the synthesis of bone matrix.

From Textbooks • Jun. 19, 2013

Thyroxine, a hormone secreted by the thyroid gland promotes osteoblastic activity and the synthesis of bone matrix.

From Textbooks • Jun. 19, 2013