Homeostasis

ahd-5
  • noun. A state of equilibrium, as in an organism or cell, maintained by self-regulating processes.
    • the GNU version of the Collaborative International Dictionary of English
  • noun. The ability and tendency of certain systems to maintain a relatively constant internal state in spite of changes in external conditions; this ability is achieved by the presence of feedback mechanisms which can adjust the state of the system to compensate for changes in the state caused by the external environment. It is exemplified in homeothermal biological systems, such as animals which maintain relatively constant blood temperature and composition in spite of variations in external temperature or the composition of the food ingested.
    • Wiktionary, Creative Commons Attribution/Share-Alike License
  • noun. The ability of a system or living organism to adjust its internal environment to maintain a stable equilibrium; such as the ability of warm-blooded animals to maintain a constant temperature.
  • noun. Such a dynamic equilibrium or balance.
    • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • noun. (physiology) metabolic equilibrium actively maintained by several complex biological mechanisms that operate via the autonomic nervous system to offset disrupting changes
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