Where does “pentagonododecaedro” come from?

pentagonododecaedro (Italian) comes from Italian pentagono, from Late Latin pentagonum, from Ancient Greek πεντάγωνον, from Ancient Greek πεντάγωνος, from Ancient Greek γωνία, from Ancient Greek γόνυ, from Proto-Hellenic gónu, from Proto-Indo-European ǵónu — knee.

pentagonododecaedro (Italian): a regular dodecahedron, having regular pentagons as faces

Definitions

a regular dodecahedron, having regular pentagons as faces

Ancestry of “pentagonododecaedro”, step by step

pentagonododecaedro traces back through two separate lines of ancestry.

via Italian pentagono

Step	Language	Word	Meaning
1	Italian	pentagono	pentagon
2	Late Latin	pentagonum	pentaphyllon
3	Ancient Greek	πεντάγωνον	pentagon
4	Ancient Greek	πεντάγωνος	five-angled
5	Ancient Greek	γωνία	corner, angle; joiner's square; cornerstone
6	Ancient Greek	γόνυ	knee
7	Proto-Hellenic	gónu	knee
8	Proto-Indo-European	ǵónu	knee

via Italian dodecaedro

Step	Language	Word	Meaning
1	Italian	dodecaedro	dodecahedron
2	Italian	dodeca-	dodeca
3	Ancient Greek	δώδεκα	twelve
4	Proto-Indo-European	*dwoΗdeḱm̥	—

Every word from Proto-Indo-European ǵónu →Every word from Proto-Hellenic gónu →Every word from Ancient Greek γόνυ →