The story
- Proto-Indo-European*h₂éd
- Proto-Italic*ad
- Proto-Italic*ad-
- Latinad-
- Englishad-
- Proto-Indo-European*h₂eǵ-?
- Proto-Indo-European*h₂eḱs-
- Proto-Italic*aksis
- Latinaxis
- Englishaxis
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Englishaxial
- English todayadaxial
Etymology from Wiktionary, CC BY-SA 4.0.