- dodecahedron (n.)
[dodecahedron 词源字典]
- 1560s, from Greek dodeka "twelve" (short for duodeka, from duo "two" + deka "ten;" compare dozen) + hedra "seat, base, chair, face of a geometric solid," from PIE root *sed- (1) "to sit" (see sedentary).[dodecahedron etymology, dodecahedron origin, 英语词源]