Semiotics (also called semiotic studies); is the study of meaning-making, the study of sign process (semiosis) and meaningful communication. It is not to be confused with the Saussurean tradition called semiology which is a subset of semiotics This includes the study of signs and sign processes, indication, designation, likeness, analogy, allegory, metonymy, metaphor, symbolism, signification, and communication. 

The semiotic tradition explores the study of signs and symbols as a significant part of communications. As different from linguistics, however, semiotics also studies non-linguistic sign systems. 

Semiotics is frequently seen as having important anthropological dimensions; for example, the Italian semiotician and novelist Umberto Eco proposed that every cultural phenomenon may be studied as communication. Some semioticians focus on the logical dimensions of the science, however. They examine areas belonging also to the life 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 (including zoosemiotics). 

The term derives from the Greek σημειωτικός "sēmeiōtikos", "observant of signs", (from σημεῖον "sēmeion", "a sign, a mark",) and it was first used in English prior to 1676 by Henry Stubbes (spelt "semeiotics") in a very precise sense to denote the branch of medical science relating to the interpretation of signs. John Locke used the term "sem(e)iotike" in book four, chapter 21 of "An Essay Concerning Human Understanding" (1690). Here he explains how science may be divided into three parts:
How the term came about?
sēmeiōtikos