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rheostat noun [C]. âº a âdevice used to âcontrol and âchange the âflow of âelectric âcurrent through a âmachine such as an âelectric âlight. (Definition of rheostat from the Cambridge Advanced Learnerâs Dictionary & Thesaurus Â© Cambridge University Press).
What is homeostasis? Homeostasis is the ability or tendency of an organism or cell to maintain internal equilibrium by adjusting its physiological processes. All living organisms strive to maintain homeostasis, using a variety of techniques which range from the release of hormones to physical reactions.