Itacism

Full definition of itacism

Noun

1. Alternative form of iotacismAt Revelation 2:25 the family reading is αχρις ου ανοιξω I open, instead of αχρις ου αν ηξω I come. Not only is ανοιξω unintelligible here, but it is a transparent itacism οι for η.
   Hodges and Farstad, Introduction to The Majority Text