Definition:Icosahedron/Linguistic Note

Linguistic Note on Icosahedron
The word icosahedron derives from the Classical Greek εἰκοσάεδρον:


 * eíkosi (εἴκοσι), meaning twenty
 * hedron (a form of ἕδρα), meaning base or seat.

The technically correct plural of icosahedron is icosahedra, but the word icosahedrons can often be found.