ho·​meo·​sta·​sis ˌhō-mē-ō-ˈstā-səs How to pronounce homeostasis (audio)
: a relatively stable state of equilibrium or a tendency toward such a state between the different but interdependent elements or groups of elements of an organism, population, or group
striving to achieve homeostasis
homeostatic adjective

Examples of homeostasis in a Sentence

Recent Examples on the Web This complex system is responsible for maintaining homeostasis and plays a role in almost every physiological function. Carol Lee, Discover Magazine, 3 Apr. 2024 This system promotes homeostasis while also playing a role in many functions and processes, including sleep, appetite, mood, and energy. Amber Smith, Discover Magazine, 3 Apr. 2024 These adaptations, which include energy homeostasis, fat deposition and control of starvation responses, may be interpreted as adaptations to local environmental conditions. Grrlscientist, Forbes, 26 Feb. 2024 According to Park, heavy metals can affect ovarian aging in several ways, including disrupting hormone homeostasis and leading to endocrine imbalance. Michelle Pugle, Health, 31 Jan. 2024 In relation to the heart, research shows that calcium homeostasis is tied to cardiac cells, meaning that maintaining appropriate levels of calcium can lessen the chance of arrhythmia. Calin Van Paris, Vogue, 26 Dec. 2023 After the year of revenge travel (and flight costs rising with a similar vengeance), tourism might be settling into relative homeostasis in 2024. Steph Koyfman, Condé Nast Traveler, 19 Dec. 2023 One region of the brain involved in your response to these types of stresses is the hypothalamus, a structure deep in the brain that is involved in trying to keep the body in a stable state, known as homeostasis. Seena Mathew, Discover Magazine, 14 Dec. 2023 Maintain the body’s homeostasis Acupuncture is known to return your body to homeostasis. India Espy-Jones, Essence, 2 Nov. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'homeostasis.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


New Latin

First Known Use

1926, in the meaning defined above

Time Traveler
The first known use of homeostasis was in 1926

Dictionary Entries Near homeostasis

Cite this Entry

“Homeostasis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/homeostasis. Accessed 18 May. 2024.

Kids Definition


ho·​meo·​sta·​sis ˌhō-mē-ō-ˈstā-səs How to pronounce homeostasis (audio)
: a tendency for the conditions inside the body of an animal (as a mammal) to stay pretty much the same even when outside environmental conditions (as temperature) change
homeostatic adjective

Medical Definition


variants or British homoeostasis
: the maintenance of relatively stable internal physiological conditions (as body temperature or the pH of blood) in higher animals under fluctuating environmental conditions
also : the process of maintaining a stable psychological state in the individual under varying psychological pressures or stable social conditions in a group under varying social, environmental, or political factors
homeostatic adjective
or British homoeostatic
homeostatically adjective
or British homoeostatically

More from Merriam-Webster on homeostasis

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