English

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

 

dodecagon

 noun
noun
BrE BrE//dəʊˈdekəɡən//
 
; NAmE NAmE//doʊˈdekəɡən//
 
(geometry)
 
jump to other results
a flat shape with twelve straight sides and twelve angles Word Origin late 17th cent.: from Greek dōdekagōnon, neuter (used as a noun) of dōdekagōnos ‘twelve-angled’.
See the Oxford Advanced American Dictionary entry: dodecagon