Noun
A maker of machines; one skilled in mechanics.
One who regards the phenomena of nature as the effects of forces merely mechanical.
Source: Webster's dictionary''He shatters the vitalist argument by calling in question the specific or personal unity of the organism, and the mechanist argument even more decisively, by calling in question the structural unity of the machine. Source: Internet
Newton had also specifically attributed the inherent power of inertia to matter, against the mechanist thesis that matter has no inherent powers. Source: Internet