词根词缀：ennea-, enne-

【来源及含义】Greek: nine

【同源单词】enneacotahedron, ennead, enneaeteric, enneagon, enneagynous, enneahedron

词根词缀：-hedral

【来源及含义】adj.

【同源单词】cathedral, dodecahedron, enneacotahedron, hexahedral, hexahedron, holohedral