# homeostasis

/ˌhoʊmioʊˈsteɪsəs/ (US) · CEFR C1 · Noun

Source: https://englishreference.com/word/homeostasis
Updated: 2026-05-28

## Definition

the body's way of keeping its internal environment stable and healthy. It is how your body stays at the right temperature, pH, and water level even when the outside world changes.

For teachers: the physiological process by which an organism maintains internal stability and equilibrium in response to external changes. Often used in biological and medical contexts to describe regulatory mechanisms.

## Examples

- Sweating is one way the body maintains homeostasis.
- When you exercise in the heat, your body uses homeostasis to prevent your internal temperature from rising to dangerous levels.
- The endocrine system plays a critical role in homeostasis by releasing hormones that regulate blood sugar levels and fluid balance throughout the body.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.