Cyanosis

n.

1.

(Med.) A condition in which, from insufficient aëration of the blood, the surface of the body becomes blue. See Cyanopathy.

Noun

1.

cyanosis - a bluish discoloration of the skin and mucous membranes; a sign that oxygen in the blood is dangerously diminished (as in carbon monoxide poisoning)

acrocyanosis, carbon monoxide poisoning, Raynaud's sign, symptom