phenomenalismPronunciation: /fɪˈnɒmɪn(ə)lɪz(ə)m/Definition of phenomenalism noun [mass noun] Philosophy the doctrine that human knowledge is confined to or founded on the realities or appearances presented to the senses. Derivatives phenomenalist noun & adjective phenomenalisticPronunciation: /-ˈlɪstɪk/ adjective phenomenalism in other Oxford dictionaries Definition of phenomenalism in the US English dictionary