(ˈ)rā|nōz- noun
Usage: usually capitalized R
Etymology: after Maurice Raynaud died 1881 French physician
: a vascular disorder marked by recurrent spasm of the capillaries and especially those of the fingers and toes and during exposure to cold, characterized by pallor, cyanosis and redness in succession, commonly accompanied by pain, and in severe cases progressing to local gangrene