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Hormone
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Human Growth Hormone, Ect
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hor⋅mone
[hawr-mohn] 
moʊn
–noun
| 1. | Biochemistry. any of various internally secreted compounds, as insulin or thyroxine, formed in endocrine glands, that affect the functions of specifically receptive organs or tissues when transported to them by the body fluids. |
| 2. | Pharmacology. a synthetic substance used in medicine to act like such a compound when introduced into the body. |
| 3. | Botany. Also called phytohormone. any of various plant compounds, as auxin or gibberellin, that control growth and differentiation of plant tissue. |
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Based on the Random House Dictionary, © Random House, Inc. 2009.
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Link To Hormone
| hor·mone (hôr'mōn') n.
[From Greek hormōn, present participle of hormān, to urge on, from hormē, impulse; see er-1 in Indo-European roots.] hor·mon'al (-mō'nəl), hor·mon'ic (-mŏn'ĭk) adj., hor·mon'al·ly adv. |
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Hormone
Hor"mone\ (h[^o]r"m[=o]n), n. [From Gr. "orma`ein to excite.] (Physiol. Chem.) A chemical substance formed in one organ and carried in the circulation to another organ on which it exerts a stimulating effect; thus, according to Starling, the gastric glands are stimulated by a hormone from the pyloric mucous membrane.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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Language Translation for : Hormone
Spanish:
hormona,
German:
das Hormon,
Japanese:
ホルモン
hormone
1905, from Gk. hormon "that which sets in motion," prp. of horman "impel, urge on," from horme "onset, impulse." Used by Hippocrates to denote a vital principle; modern meaning coined by Eng. physiologist Ernest Henry Starling (1866-1927). Jung used horme (1915) in ref. to hypothetical mental energy that drives unconscious activities and instincts.
Online Etymology Dictionary, © 2001 Douglas Harper
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Main Entry: hor·mone
Pronunciation: 'hor-"mOn
Function: noun
1 : a product of living cells that circulates in body fluids or sap and producesa specific effect on the activity of cells remote from its point of origin; especially : one exerting a stimulatory effect on a cellular activity called also internal secretion;—see PLANT HORMONE
2 : a synthetic substance that acts like a hormone —hor·mone·like /-"lIk/ adjective
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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hormone hor·mone (hôr'mōn')
n.
A substance, usually a peptide or steroid, produced by one tissue and conveyed by the bloodstream to another to effect physiological activity, such as growth or metabolism.
hor·mon'al (-mō'nəl) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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hormone (hôr'mōn') Pronunciation Key
Our Living Language : Among the most abundant and influential chemicals in the human body are the hormones, found also throughout the entire animal and plant kingdoms. The endocrine glands alone, including the thyroid, pancreas, adrenals, ovaries, and testes, release more than 20 hormones that travel through the bloodstream before arriving at their targeted sites. The pea-sized pituitary gland, located at the base of the brain below the hypothalamus, is considered the most crucial part of the endocrine system, producing growth hormone and hormones that control other endocrine glands. Specialized cells of the nervous system also produce hormones. The brain itself releases endorphins, hormones that act as natural painkillers. Hormones impact almost every cell and organ of the human body, regulating mood, growth, tissue function, metabolism, and sexual and reproductive function. Compared to the nervous system, the endocrine system regulates slower processes such as metabolism and cell growth, while the nervous system controls more immediate functions, such as breathing and movement. The action of hormones is a delicate balancing act, which can be affected by stress, infection, or changes in fluids and minerals in the blood. The pituitary hormones are influenced by a variety of factors, including emotions and fluctuations in light and temperature. When hormone levels become abnormal, disease can result, such as diabetes from insufficient insulin or osteoporosis in women from decreased estrogen. On the other hand, excessive levels of growth hormone may cause uncontrolled development. Treatment for hormonal disorders usually involves glandular surgery or substitution by synthetic hormones. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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