a state of biological suspension or cessation of metabolic activity induced by extreme cold, as in cryonics or hibernation.
From Greek 'kryos' (cold) + 'stasis' (standing still, stoppage), literally 'cold-stillness,' describing the halting of life processes through freezing.
Some organisms achieve a natural cryostase during winter—wood frogs actually freeze solid with 70% of their body water turned to ice, their heart stops beating, but in spring they thaw out perfectly fine.
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