Semeiology
Pronunciation : Se`mei*ol"o*gy, or Se`mi*ol"o*gy
Part of Speech : n.
Etymology : [Gr. shmei^on a mark, a sign + -logy.]
Definition : Defn: The science or art of signs. Specifically: (a) (Med.) The science of the signs or symptoms of disease; symptomatology. (b) The art of using signs in signaling.
Source : Webster's Unabridged Dictionary, 1913