polygon
n.
1570s, from Latin polygonum, from Greek polygonon, noun use of neuter of adjective polygonos "many-angled," from polys "many" (see poly-) + -gonos "angled," from gonia "angle" (see -gon). Related: Polygonal.
〔李〕n. 多角形 [poly- =many] ←-gon [GK] =a plane figure having...angles表示“⋯角形”