Theorist
Pronunciation : The"o*rist
Part of Speech : n.
Etymology : [Cf. F. th?oriste.]
Definition : Defn: One who forms theories; one given to theory and speculation; a speculatist. Cowper. The greatest theoretists have given the preference to such a government as that which obtains in this kingdom. Addison.
Source : Webster's Unabridged Dictionary, 1913