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Definition of heptahedron noun from the Oxford Advanced American Dictionary

 

heptahedron

 noun
noun
NAmE//ˌhɛptəˈhidrən//
 
, NAmE//ˌheptəˈhedrən//
 
(geometry)
 
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a solid figure with seven flat sides
See heptahedron in the Oxford Advanced Learner's Dictionary
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