The story
- Proto-Indo-European*ǵónu
- Proto-Hellenic*gónu
- Proto-Hellenic*gonwía
- Ancient Greekγωνίᾱ (gōníā)
- Englishgonio-
- Proto-Indo-European*speḱ-
- Proto-Indo-European*spéḱyeti
- Proto-Hellenic*sképt͏̌omai
- Ancient Greekσκέπτομαι (sképtomai)
- Ancient Greekσκοπός (skopós)
- Ancient Greekσκοπέω (skopéō)
- Englishgonioscopic
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Proto-Indo-European*leyg-
- Proto-Germanic*līką
- English todaygonioscopically
From gonioscopic + -ally.
Etymology from Wiktionary, CC BY-SA 4.0.