The story
- Proto-Indo-European*déḱm̥
- Proto-Indo-European*ḱm̥tóm
- Proto-Indo-Iranian*ćatám
- Avestan𐬯𐬀𐬙𐬀 (sata)
- Avestan𐬯𐬀𐬙𐬆𐬨 (satəm)
- Englishsatem
- Englishsatemize
- English todaysatemization
From satem + -ization or satemize + -ation. Doublet of centumization.
Etymology from Wiktionary, CC BY-SA 4.0.