mechanist

from WordNet (r) 3.0 (2006)

mechanist
    n 1: a philosopher who subscribes to the doctrine of mechanism

from The Collaborative International Dictionary of English v.0.48

Mechanist \Mech"an*ist\, n.
   1. A maker of machines; one skilled in mechanics.
      [1913 Webster]

   2. One who regards the phenomena of nature as the effects of
      forces merely mechanical.
      [1913 Webster]