n. [ Gr. shmasi`a signification + -logy. ] (Philol.) The science of meanings or sense development (of words); the explanation of the development and changes of the meanings of words; -- more commonly referred to as semantics. -- Se*ma`si*o*log"ic*al a. [Webster 1913 Suppl.]

{ . Same as Semeiography, Semeiology, Semeiological. [ 1913 Webster ]

{ or , n. [ Gr. shmei^on a mark, a sign + -logy. ] The study of signs as an element of communication; the analysis of systems of communication; -- also called semiotics. Specifically: (a) (Med.) The science of the signs or symptoms of disease; symptomatology. (b) The art of using signs in signaling. [ 1913 Webster ]