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Related to thyroxine: Levothyroxine


 (thī-rŏk′sēn′, -sĭn) also thy·rox·in (-rŏk′sĭn)
n. Abbr. T4
An iodine-containing hormone, C15H11I4NO4, produced by the thyroid gland, that increases the rate of cell metabolism and regulates growth. A synthetic form is used in the treatment of thyroid disorders.


(θaɪˈrɒksiːn; -sɪn) or


(Biochemistry) 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: C15H11I4NO4
[C19: from thyro- + oxy-2 + -ine2]


(θaɪˈrɒk sin, -sɪn)

also thy•rox•in


a hormone of the thyroid gland that regulates the metabolic rate of the body: preparations of it used for treating hypothyroidism.
[1915–20; thyr- + ox- + in (dol) e (orig. thought to be a chemical component)]


A hormone made in the thyroid that is important for growth and mental development.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.thyroxine - hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells; "thyroxine is 65% iodine"
thyroid hormone - any of several closely related compounds that are produced by the thyroid gland and are active metabolically


, thyroxin
n. tiroxina, hormona producida por la tiroides que contiene yodo; se obtiene sintéticamente de la tiroides de animales y se usa en el tratamiento de hipotiroidismo.


n tiroxina
References in periodicals archive ?
A deficiency of thyroxine leads to slowing of all body processes and weight gain, she added.
On the functions of thyroid gland, she said that an excess or reduced secretion of thyroxine affected health.
KARACHI -- A deficiency of thyroxine leads to slowing of all body processes and weight gain so a normal thyroid function is essential for health, said Dr Tasnim Ahsan.
Our findings suggest that levels of the thyroid hormone, free thyroxine, circulating in the blood might be an additional risk factor for atrial fibrillation," said study lead author Christine Baumgartner.
These products contain both thyroxine and triiodothyronine.
Thyroid hormon levels were evaluated and thyroid ultrasonography was performed in cases who are at the end of their 3 years of age, after 6 weeks of thyroxine free period.
Furosemide, salicylates, phenytoin, and heparin compete for thyroid hormone binding sites and displace thyroxine (T4).
Higher levels of free thyroxine are associated with an increased risk of sudden cardiac death, even in euthyroid adults, according to a report published online Sept.
By conventional criteria the association between HbAlcAfter Thyroxine value and hypothyroidism is considered to be statistically significant since p<0.
There was no significant difference in the thyroxine ([T.
Patients with this condition can initially be misdiagnosed as having polymyositis due to similar characteristics of both diseases; however a response to thyroxine is the main differentiating feature.
0g/g) of thyroxine (T4) on total protein contents of muscle, liver and kidney in broilers (Hubbard) chicks of different age groups were monitored against time.

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