Experimentist

One who makes experiments. Experimentum Cru'cis. [Lat., experiment of the cro . A term applied by Bacon to any leading or decisive experiment: - either from its being like a cro or direction-post, placed by the roadside to guide travellers in the right path, or on account of its being a kind of torture to elicit the truth, as the cro was used like the rack for that purpose in ancient times.