Se`mei*ol"o*gy (?), ∨ Se`mi*ol"o*gy, n. [Gr. shmei^on a mark, a sign + -logy.]

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.

 

© Webster 1913.