The Collaborative International Dictionary of English v.0.48:

Experientialism \Ex*pe`ri*en"tial*ism\
   ([e^]ks*p[=e]`r[i^]*[e^]n"shal*[i^]z'm), n. (Philos.)
   The doctrine that experience, either that of ourselves or of
   others, is the test or criterion of general knowledge; --
   opposed to intuitionalism.
   [1913 Webster]

         Experientialism is in short, a philosophical or logical
         theory, not a psychological one.         --G. C.
                                                  Robertson.
   [1913 Webster]