physicalismPronunciation: /ˈfɪzɪk(ə)lɪz(ə)m/Definition of physicalism noun [mass noun] Philosophy the doctrine that the real world consists simply of the physical world. Derivatives physicalist noun & adjective physicalisticPronunciation: /-ˈlɪstɪk/ adjective physicalism in other Oxford dictionaries Definition of physicalism in the US English dictionary