experiment (n.) Look up experiment at Dictionary.com
mid-14c., from Old French esperment "practical knowledge, cunning, enchantment; trial, proof, example, lesson," from Latin experimentum "a trial, test, proof, experiment," noun of action from experiri "to test, try" (see experience (n.)).
experiment (v.) Look up experiment at Dictionary.com
late 15c., from experiment (n.). Related: Experimented; experimenting.