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hormone    音標拼音: [h'ɔrm,on]
n. 荷爾蒙

荷爾蒙

hormone
n 1: the secretion of an endocrine gland that is transmitted by
the blood to the tissue on which it has a specific effect
[synonym: {hormone}, {endocrine}, {internal secretion}]

Hormone \Hor"mone\ (h[^o]r"m[=o]n), n. [From Gr. "orma`ein to
excite.]
1. (Physiological Chem.) A chemical substance formed in one
organ and carried in the circulation to another organ on
which it exerts a specific effect on cells at a distance
from the producing cells; thus, pituitary hormones
produced in the brain may have effects on cells in distant
parts of the body..
[Webster 1913 Suppl. PJC]

2. (Physiological Chem.) a chemical substance, whether
natural or synthetic, that functions like a hormone in a
living organism. Thus, synthetic steroid hormones may be
more effective than their natural counterparts.
[PJC]

3. (Bot.) A substance that controls growth rate or
differentiation in plants; also called {phytohormone}. The
most well-known are the {auxins} that stimulate growth at
the growing tips of plants, and control root formation and
the dropping of leaves; and the {gibberellins}, which are
used in agriculture to promote plant growth.
[PJC]

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英文字典中文字典相關資料:
  • Hormone - Wikipedia
    Hormones are required for the normal development of animals, plants and fungi Due to the broad definition of a hormone (as a signaling molecule that exerts its effects far from its site of production), numerous kinds of molecules can be classified as hormones
  • Hormones | Endocrine Glands | MedlinePlus
    Hormones are your body's chemical messengers They affect many processes including mood Too much or too little of a certain hormone can have health implications
  • Hormones and the Endocrine System | Johns Hopkins Medicine
    Consider the following hormones and their role in the workings of the endocrine system: Controls production of sex hormones (estrogen in women and testosterone in men) and the production of eggs in women and sperm in men
  • Are your hormones imbalanced? Doctors explain how to know if . . .
    Do you know what your hormone levels are? Should you? Your body is home to more than 50 hormones — chemical messengers that compose the endocrine system — and hormonal changes may reflect any





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