A hormone that stimulates growth in animal or plant cells, especially (in animals) a hormone secreted by the pituitary gland.
- We have been treating growth hormone deficiency with growth hormone in children for over four decades.
- Break a stalk, and the plant secretes a growth hormone that causes four or five shoots to bounce back.
- Within the first year of birth, secretion of growth hormone by the pituitary gland commences.
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