The main hormone produced by the thyroid gland, acting to increase metabolic rate and so regulating growth and development.
- ‘When your thyroid gland produces too much of the hormone thyroxine, you develop hyperthyroidism.’
- ‘He tested for thyrotrophin releasing hormone in 67 women with menorrhagia who had normal concentrations of thyroxine and thyroid stimulating hormone.’
- ‘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.’
- ‘Hormones that require amino acids for starting materials include thyroxine (the hormone produced by the thyroid gland), and auxin (a hormone produced by plants).’
Early 20th century: from thyroid + ox- oxygen + in from indole (because of an early misunderstanding of its chemical structure), altered by substitution of -ine.
We take a look at several popular, though confusing, punctuation marks.