Experimentation

google

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Middle English: from Old French, or from Latin experimentum, from experiri ‘try’. Compare with experience and expert.

wiktionary

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From Latinex- + -periri (akin to periculum), "attempt". Morphologically experiment +‎ -ation

etymonline

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experimentation (n.)

"the act or practice of making experiments, the process of experimenting," 1670s, noun of action from experiment (v.).