Webster's English Dictionary

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synthesis

syn.the.sis \'sin(t)-th*-s*s\ \-th*-.se-z\ \-s*st\ n or syn.the.ses [Gk, 
   fr. syntithenai to put together, fr. syn- + tithenai to] pl put, place - 
   more at DO 1a: the composition or combination of parts or elements so as to 
   form a who le 1b: the production of a substance by the union of elements or 
   simpler chemi cal compounds or by the degradation of a complex compound 1c: 
   the combining of often diverse conceptions into a coherent whole; al so : 
   the complex so formed 2a: deductive reasoning  2b: the dialectic 
   combination of thesis and antithesis into a higher stage  of truth - 
   syn.the.sist n