digonWiktionary 原文英美/ˈdaɪɡən/构词拆解didi-前缀gon-gon后缀di-Two. · Double, twice the quantity.-gon(geometry) Forms the names of plane figures containing a given number of internal angles, and thus bounded by that number of line segments (polygons).词源说明From di- (prefix meaning ‘two’) + -gon (suffix forming the names of plane figures containing a given number of angles).释义名词noun1(geometry) A polygon having two edges and two vertices.2(graph theory) A pair of parallel undirected edges in a multigraph.3