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homeostasis

noun [U]
 
 
/ˌhəʊ.mi.əʊˈsteɪ.sɪs/ US  /ˌhəʊ.mi.oʊˈ-/ specialized

Definition

the ability or tendency of a living organism, cell, or group to keep the conditions inside it the same despite any changes in the conditions around it, or this state of internal balance: Warm-blooded animals are able to achieve temperature homeostasis.The circulatory system and blood
(Definition of homeostasis noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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