The story
- Middle English · inherited from-acioun
- Middle English · inherited from-acioun
- English today-ation
Inherited from Middle English -acioun, borrowed from Old French -ation, a learned borrowing from Latin -ātiō, from -tiō, from Proto-Italic *-tiō, from Proto-Indo-European *-tiHō, from *-tis + *-Hō. By surface analysis, -ate + -ion.
Etymology from Wiktionary, CC BY-SA 4.0.