D defs.my
Entry 2 senses Webster, 1913

Experimentalist

· Ex·per·i·men·tal·ist · IPA /ɪkspˌɛrəmˈɛntəlɪst/
01 n. One who makes experiments, especially one who likes to experiment; an experimenter.
  1. 1.
    One who makes experiments, especially one who likes to experiment; an experimenter.
  2. 2.
    One who relies primarily on experimentation and the evidence of one's own senses; an empiricist; -- contrasted with theoretician or dogmatist.