The story
- Proto-Indo-European*ǵónu
- Proto-Hellenic*gónu
- Proto-Hellenic*gonwía
- Ancient Greekγωνίᾱ (gōníā)
- English todaygonio-
From Ancient Greek γωνία (gōnía, “angle”).
Words from the same roots
Ancient Greekγωνία all →
gon-gongoniorhynchidhexacontagonOrthogonian
Etymology from Wiktionary, CC BY-SA 4.0.