Hippocratic facethe change produced in the countenance by death, or long sickness, excessive evacuations, excessive hunger, and the like. The nose is pinched, the eyes are sunk, the temples hollow, the ears cold and retracted, the skin of the forehead tense and dry, the complexion livid, the lips pendent, relaxed, and cold; -- so called, as having been described by Hippocrates.
Webster's Revised Unabridged Dictionary
L. facies Hippocratica
He had what was in those days termed a hippocratical expression of face.
"The Man Who Laughs" by Victor Hugo
It was the last change of the Hippocratic face that Nature turned toward the spectator.