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单词 thyroxine
释义

Definition of thyroxine in English:

thyroxine

noun θʌɪˈrɒksɪnθʌɪˈrɒksiːn
mass nounBiochemistry
  • The main hormone produced by the thyroid gland, acting to increase metabolic rate and so regulating growth and development.

    〔生化〕甲状腺素

    An iodine-containing amino acid; chemical formula: C₁₅H₁₁NO₄I₄

    Example sentencesExamples
    • Human beings require iodine for the production of the thyroid hormones, thyroxine and triiodothyronine.
    • He tested for thyrotrophin releasing hormone in 67 women with menorrhagia who had normal concentrations of thyroxine and thyroid stimulating hormone.
    • Hormones that require amino acids for starting materials include thyroxine (the hormone produced by the thyroid gland), and auxin (a hormone produced by plants).
    • When your thyroid gland produces too much of the hormone thyroxine, you develop hyperthyroidism.
    • The thyroid releases too much of the hormone thyroxine, which increases the person's basal metabolic rate.

Origin

Early 20th century: from thyroid + ox- 'oxygen' + in from indole (because of an early misunderstanding of its chemical structure), altered by substitution of -ine4.

Definition of thyroxine in US English:

thyroxine

(also thyroxin)
noun
Biochemistry
  • The main hormone produced by the thyroid gland, acting to increase metabolic rate and so regulating growth and development.

    〔生化〕甲状腺素

    An iodine-containing amino acid; chemical formula: C₁₅H₁₁NO₄I₄

    Example sentencesExamples
    • When your thyroid gland produces too much of the hormone thyroxine, you develop hyperthyroidism.
    • Hormones that require amino acids for starting materials include thyroxine (the hormone produced by the thyroid gland), and auxin (a hormone produced by plants).
    • Human beings require iodine for the production of the thyroid hormones, thyroxine and triiodothyronine.
    • The thyroid releases too much of the hormone thyroxine, which increases the person's basal metabolic rate.
    • He tested for thyrotrophin releasing hormone in 67 women with menorrhagia who had normal concentrations of thyroxine and thyroid stimulating hormone.

Origin

Early 20th century: from thyroid + ox- ‘oxygen’ + in from indole (because of an early misunderstanding of its chemical structure), altered by substitution of -ine.

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更新时间:2024/11/11 10:38:55