Encyclopedist /(?)/

En·cy·clo·pe·dist

Encyclopedist

n.
  1. The compiler of an encyclopedia, or one who assists in such compilation; also, one whose knowledge embraces the whole range of the sciences.

Phrases & Compounds
The Encyclopedists
the writers of the great French encyclopedia which appeared in 1751-1772. The editors were Diderot and D'Alembert. Among the contributors were Voltaire and Rousseau.