The Collaborative International Dictionary of English v.0.48:

Experiment \Ex*per"i*ment\ ([e^]ks*p[e^]r"[i^]*ment), v. t.
   [imp. & p. p. Experimented; p. pr. & vb. n.
   Experinenting.]
   To make experiment; to operate by test or trial; -- often
   with on, upon, or in, referring to the subject of an
   experiment; with, referring to the instrument; and by,
   referring to the means; as, to experiment upon electricity;
   he experimented in plowing with ponies, or by steam power.
   [1913 Webster]