Webster's English Dictionary

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semiotic

semi.o.tic also semi.o.ti.cal \.sem-e--'a:t-ik, .sem-.i--, -'o-t-\ \-iks\ 
   \-i-k*l\ \s*-.mi--*-'tish-*n\ n or semi.o.tics [Gk se-meio-tikos observant 
   of signs, fr. se-meiousthai to] pl  but sing or pl in constr  interpret 
   signs, fr. se-meion sign; akin to Gk se-ma sign - more at SEMANTIC : a 
   general philosophical theory of signs and symbols that deals esp. with  
   their function in both artificially constructed and natural languages and 
   comprises syntactics, semantics, and pragmatics - semi.o.ti.c aj