hep.ta.gon
n.（名词）A polygon having seven sides.七边形：有七条边的多边形
来源：From Greek heptagônon [neuter of] heptagônos [having seven angles] 源自 希腊语 heptagônon [] heptagônos的中性 [有七个角] hepta- [hepta-] hepta- [前缀，意为.七.] -gônos [angled] * see -gon -gônos [角的] *参见 -gon
【引伸】
heptag.onal
