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epiphenomenon

American  
[ep-uh-fuh-nom-uh-non, -nuhn] / ˌɛp ə fəˈnɒm əˌnɒn, -nən /

noun

plural

epiphenomena, epiphenomenons

  1. Pathology. a secondary or additional symptom or complication arising during the course of a disease.

  2. any secondary phenomenon.

epiphenomenon British  
/ ˌɛpɪfɪˈnɒmɪnən /

noun

  1. a secondary or additional phenomenon; by-product

  2. pathol an unexpected or atypical symptom or occurrence during the course of a disease

"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

Other Word Forms

  • epiphenomenal adjective
  • epiphenomenally adverb

Etymology

Origin of epiphenomenon

First recorded in 1700–10; epi- + phenomenon

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.