Main Entry: poly·gon

Pronunciation: \ˈpä-lē-ˌgän\

Function: noun

Etymology: Late Latin polygonum, from Greek polygōnon, from neuter of polygōnos polygonal, from poly- + gōnia angle — more at -gon

Date: 1571

1 : a closed plane figure bounded by straight lines
2 : a closed figure on a sphere bounded by arcs of great circles

— po·lyg·o·nal \pə-ˈli-gə-n^əl\ adjective

— po·lyg·o·nal·ly \-n^əl-ē\ adverb