Also see definition of "Experiment" in Word Study
Experiment
EXPERIMENT [isbe]
EXPERIMENT - eks-per'-i-ment (dokime, "approvedness," "tried character"): "The experiment of this ministration" (2 Cor 9:13 the King James Version, the Revised Version (British and American) "the proving of you by his ministration"), i.e. the sincerity of their Christian profession was evidenced by their liberal contribution.
Also see definition of "Experiment" in Word Study