"Motionist" is a word in ENGLISH

The beginner, former, or first mover of anything; hence, the efficient cause of a thing; a creator; an originator.

In criminal law. A common mover, exciter, or maintainer of suits and quarrels either in courts or elsewhere ln the …

An efficient cause; a prime mover.

A mover or exciter of electricity; as apparatus for generating a current of electricity.

A unit of power, used in stating the power required to drive machinery, and in estimating the capabilities of animals …

That branch of science, or of engineering, which treats of fluids in motion, especially of water, its action in rivers …

The work done by a steam engine or other prime mover when working.

In general, any combination of bodies so connected that their relative motions are constrained, and by means of which force …

One who makes a motion; a mover.

That which moves; a mover.

A prime mover; a machine by means of which a source of power, as steam, moving water, electricity, etc., is …

A person or thing that imparts motion, or causes change of place; a motor.

One who, or that which, excites, instigates, or causes movement, change, etc.; as, movers of sedition.

A person or thing that moves, stirs, or changes place.

A proposer; one who offers a proposition, or recommends anything for consideration or adoption; as, the mover of a resolution …

Lat Not to

Specifically, to support, as a motion or proposal, by adding one's voice to that of the mover or proposer.