theorizer

from WordNet (r) 3.0 (2006)

theorizer
    n 1: someone who theorizes (especially in science or art) [syn:
         {theorist}, {theoretician}, {theorizer}, {theoriser},
         {idealogue}]

from The Collaborative International Dictionary of English v.0.48

Theorizer \The"o*ri`zer\, n.
   One who theorizes or speculates; a theorist.
   [1913 Webster]

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