Home › Words › I › intereffectintereffectintereffect means the condition of two or more things affecting each other.Among words judged in Lexicurio's Arena, intereffect ranks #2,710 of 42,749 for Qualifying.EtymologyFrom inter- + effect.nounThe condition of two or more things affecting each other.Definitions & examples from Wiktionary (CC BY-SA 3.0).