IPA: /ˌɛpɪfəˈnɒmən/
KK: /ˌɛpɪfəˈnɑːmən/
A secondary effect or condition that occurs alongside a primary phenomenon but does not directly influence it.
The patient's fatigue was considered an epiphenomenon of the underlying illness.
Epiphenomenon is formed from "epi-" (meaning upon or over) and "phainomenon" (from Greek "phainesthai", meaning to appear or to show). The term describes a secondary effect or byproduct that arises from a primary phenomenon, appearing alongside it but not influencing it directly.
Think of something that appears 'upon' ('epi-') another thing, like a shadow that shows up alongside an object but doesn't change it. This helps you remember that an epiphenomenon is a secondary effect that appears with a primary cause.