Definition of polygon noun from the Oxford Advanced American Dictionary

 

polygon

 noun
noun
NAmE//ˈpɑliˌɡɑn//
 
(geometry)
 
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a flat shape with at least three straight sides and angles, and usually five or more
NAmE//pəˈlɪɡənl//
 
adjective
See the Oxford Advanced Learner's Dictionary entry: polygon