semiotics

n. study of signs, study of conventional symbols used to denote objects

Semiotics, semiotic studies, or semiology is the study of sign processes (semiosis), or signification and communication, signs and symbols, both individually and grouped into sign systems. It includes the study of how meaning is constructed and understood. This discipline is frequently seen as having important anthropological dimensions. However, some semioticians focus on the logical dimensions of the science. They examine areas belonging also to the natural sciences - such as how organisms make predictions about, and adapt to, their semiotic niche in the world (see semiosis). In general, semiotic theories take signs or sign systems as their object of study: the communication of information in living organisms is covered in biosemiotics or zoosemiosis.
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Semiotics /se·mi·ot·ics/ symptomatology. semiotics, n See symptomatology. [more]Semiotics - Community and Resources

Noun
1. (philosophy) a philosophical theory of the functions of signs and symbols
(hypernym) philosophical doctrine, philosophical theory
(classification) philosophy

(n.)
Semeiology.
  

(n.)
Same as Semeiotics.