"Experimentist" is a word in ENGLISH

To furnish or give experimental knowledge of; to make (one) to know; to make familiar; -- followed by with.

Hence: A full collection or set of implements, or utensils, for a given duty, experimental or operative; any complex instrument …

An experimenter in aviation.

An act of knowledge, one or more, by which single facts or general truths are ascertained; experimental or inductive knowledge; …

An experimenter.

Atrial or special observation, made to confirm or disprove something doubtful; esp., one under conditions determined by the experimenter; an …

Pertaining to experiment; founded on, or derived from, experiment or trial; as, experimental science; given to, or skilled in, experiment; …

Known by, or derived from, experience; as, experimental religion.

To make experiments (upon); to experiment.

By experiment; by experience or trial.

The act of experimenting; practice by experiment.

Experimental; of the nature of experiment.

An experimenter.

One who makes experiments; one skilled in experiments.

One who makes experiments; an experimenter.

To use or do for the first time, esp. so as to make fortunate or unfortunate; to try experimentally.

Absence or want of experience; lack of personal and experimental knowledge; as, the inexperience of youth.

Fitted for trail or test; experimental; tentative; treating of attempts.

Fitted for trial beforehand; experimental.

Of or pertaining to a trial or trials; essaying; experimental.