tetrahedron的词源

英文词源

tetrahedron (n.)

"triangular pyramid, solid figure contained by four triangular surfaces," 1560s, from Late Greek tetraedron, noun use of neuter of tetraedros (adj.) "four-sided," from tetra- "four" (see tetra-) + hedra "seat, base, chair, face of a geometric solid," from PIE root *sed- (1) "to sit" (see sedentary). Related: Tetrahedral.

中文词源

tetrahedron：四面体

tetra-,四，-hed,座位，面，词源同 seat,polyhedron.

该词的英语词源请访问找单词词源英文版：tetrahedron 词源，tetrahedron 含义。