semiotics

The theory and study of signs and symbols, especially as elements of language or other systems of communication, and comprising semantics, syntactics, and pragmatics.

The doctrine or science of signs; the language of signs.

2. Specifically, that branch of pathology which is concerned with the significance of all symptoms in the human body, whether healthy or diseased; symptomatology; semiology.

Same as semeiotics.

The study of signs and symbols, especially as means of language or communication.

(philosophy) a philosophical theory of the functions of signs and symbols