[ ep-uh-fuh-nom-uh-nl-iz-uh m ]
/ ˌɛp ə fəˈnɒm ə nlˌɪz əm /


the doctrine that consciousness is merely an epiphenomenon of physiological processes, and that it has no power to affect these processes.

Origin of epiphenomenalism

First recorded in 1895–1900; epi- + phenomenalism

Related forms

ep·i·phe·nom·e·nal·ist, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for epiphenomenalism

  • Bergson however has more to assert than merely the inadequacy and falsity of Parallelism or Epiphenomenalism.

    Bergson and His Philosophy|J. Alexander Gunn

British Dictionary definitions for epiphenomenalism


/ (ˌɛpɪfɪˈnɒmɪnəˌlɪzəm) /


the dualistic doctrine that consciousness is merely a by-product of physiological processes and has no power to affect themCompare interactionism, parallelism

Derived Forms

epiphenomenalist, noun, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012