Semeiology
Semeiology (sē`me*ol"o*jy or sē`mi*ol"o*jy) , noun
[Greek shmei^on a mark, a sign + -logy.]
(Medicine) The study of signs as an element of communication; the analysis of systems of communication; -- also called semiotics.
(a)
(Medicine) The science of the signs or symptoms of disease; symptomatology.
(b)
(Medicine) The art of using signs in signaling.
Also: Semiology