ə̇ˈrepshən noun
( -s )
Etymology: Late Latin irreption-, irreptio, from Latin irreptus (past participle of irrepere to creep in, from in- in- (II) + repere to creep) + -ion-, -io -ion — more at reptile
: an act or instance of entering by stealth or inadvertence
the irreption of pseudoclassical plurals in technical language