Definition of polygon noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈpɒlɪɡən//
; NAmE NAmE//ˈpɑːliɡɑːn//
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a flat shape with at least three straight sides and angles, and usually five or more Word Originlate 16th cent.: via late Latin from Greek polugōnon, neuter (used as a noun) of polugōnos ‘many-angled’.
See the Oxford Advanced American Dictionary entry: polygon