symphytism

from The Collaborative International Dictionary of English v.0.48
Symphytism \Sym"phy*tism\, n. [Gr. ? grown together.]
   Coalescence; a growing into one with another word. [R.]
   [1913 Webster]

         Some of the phrasal adverbs have assumed the form of
         single words, by that symphytism which naturally
         attaches these light elements to each other. --Earle.
   [1913 Webster]
    

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