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

 

hexagram

 noun
noun
BrE BrE//ˈheksəɡræm//
 
; NAmE NAmE//ˈheksəɡræm//
 
(geometry)
 
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a shape made by six straight lines, especially a star made from two triangles with equal sides Word Origin mid 19th cent.: from hexa- ‘six’ + Greek gramma ‘line’.
See the Oxford Advanced American Dictionary entry: hexagram