Loss of consciousness or extreme weakness caused by lack of blood supply or oxygen to the extremities.
From Greek 'akron' (extremity) + 'asphyxia' (suffocation, from 'a-' without + 'sphyzein' to pulse), combining terms for the extremities and loss of vital function.
This scary-sounding medical term describes what happens when extremities don't get enough oxygen—like how fingers and toes turn blue in severe cold or when circulation fails, cutting off their lifeline.
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