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a dormant state in which certain animals pass the winter, marked by deep sleep and sharp reduction in body temperature and metabolism.
artificial hibernation a state of reduced metabolism, muscle relaxation, and a twilight sleep resembling narcosis, produced by controlled inhibition of the sympathetic nervous system and causing attenuation of the homeostatic reactions of the organism.
A state of hibernation produced therapeutically by use of drugs alone or drugs and hypothermia. This greatly reduces the metabolic rate during procedures such as open heart surgery.
See also: hibernation