Ex-pĕr'i-mĕnt'al, a.

adjective

a. [Fr. expérimental, Sp. experimental, It. experimentale.]

  1. Pertaining to experiment; given to, or skilled in, experiment; founded, derived from, or affording experiment or trial; as, experimental knowledge or philosophy; a great experimental philosopher.
  2. Taught by, or derived from, experience; experienced; as, experimental religion.

My observation, Which with experimental seal doth warrant The tenor of my book. Shak.