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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
    A hormone (from the Greek participle ὁρμῶν, "setting in motion") is a class of signaling molecules in multicellular organisms that are sent to distant organs or tissues by complex biological processes to regulate physiology and behavior [1] Hormones are required for the normal development of animals, plants and fungi Due to the broad
  • Hormones and the Endocrine System | Johns Hopkins Medicine
    The endocrine system uses hormones to control and coordinate your body's internal metabolism (or homeostasis) energy level, reproduction, growth and development, and response to injury, stress, and environmental factors Consider the following hormones and their role in the workings of the endocrine system:
  • Hormones | Endocrine Glands - MedlinePlus
    Endocrine glands, which are special groups of cells, make hormones The major endocrine glands are the pituitary, pineal, thymus, thyroid, adrenal glands, and pancreas In addition, men produce hormones in their testes and women produce them in their ovaries Hormones are powerful
  • What are hormones? Types, functions, and imbalances
    Hormones are chemical messengers that send a signal to one or more tissues or organs in the body They are part of the endocrine system, and the study of this system is known as endocrinology
  • Hormones | You and Your Hormones
    What is a hormone? A hormone is a chemical that is made by specialist cells, usually within an endocrine gland, and it is released into the bloodstream to send a message to another part of the body It is often referred to as a ‘chemical messenger’





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