Where does “decagonal” come from?
decagonal (Catalan) comes from Catalan decàgon, from Catalan -gon, from Ancient Greek γωνία, from Ancient Greek γόνυ, from Proto-Hellenic gónu, from Proto-Indo-European ǵónu — knee.
decagonal (Catalan): decagonal
Ancestry of “decagonal”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Catalan | decàgon | decagon |
| 2 | Catalan | -gon | -gon |
| 3 | Ancient Greek | γωνία | corner, angle; joiner's square; cornerstone |
| 4 | Ancient Greek | γόνυ | knee |
| 5 | Proto-Hellenic | gónu | knee |
| 6 | Proto-Indo-European | ǵónu | knee |