Definitions for hormoneˈhɔr moʊn

This page provides all possible meanings and translations of the word hormone

Princeton's WordNet

  1. hormone, endocrine, internal secretion(noun)

    the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect

Wiktionary

  1. hormone(Noun)

    Any substance produced by one tissue and conveyed by the bloodstream to another to effect physiological activity.

  2. hormone(Noun)

    A synthetic compound with the same activity.

  3. hormone(Noun)

    Any similar substance in plants.

Freebase

  1. Hormone

    A hormone is a chemical released by a cell, a gland, or an organ in one part of the body that affects cells in other parts of the organism. Generally, only a small amount of hormone is required to alter cell metabolism. In essence, it is a chemical messenger that transports a signal from one cell to another. All multicellular organisms produce hormones; plant hormones are also called phytohormones. Hormones in animals are often transported in the blood. Cells respond to a hormone when they express a specific receptor for that hormone. The hormone binds to the receptor protein, resulting in the activation of a signal transduction mechanism that ultimately leads to cell type-specific responses. Endocrine hormone molecules are secreted directly into the bloodstream, typically into fenestrated capillaries. Hormones with paracrine function diffuse through the interstitial spaces to nearby target tissues. A variety of exogenous chemical compounds, both natural and synthetic, have hormone-like effects on both humans and wildlife. Their interference with the synthesis, secretion, transport, binding, action, or elimination of natural hormones in the body can change the homeostasis, reproduction, development, and/or behavior, just as endogenously produced hormones do.


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