köken: From desertieren + -ation, formed by wrong analogy with other Latinate verbs in -ieren which form a corresponding noun in -ation, such as deklinieren (from Latin declinare) → Deklination (from Latin declinatio), and possibly in part by confusion with the similar-sounding Dissertation. The proper Latinate form is Desertion.
köken: Etymology tree Proto-Indo-European *de Proto-Indo-European *-h₁ Proto-Indo-European *déh₁ Proto-Italic *dē Latin dē Latin dē- Latin serō Latin dēserō Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiō Latin dēsertiōlbor. Polish dezercja Learned borrowing from Latin dēsertiō.