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

trihedron

noun

/traɪˈhɪdrən/

/traɪˈhɪdrən/

(geometry)

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a solid shape with three sides in addition to its base or endsTopics Colours and Shapesc2
Word Originearly 19th cent.: from tri- ‘three’ + -hedron, on the pattern of words such as polyhedron.

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See trihedron in the Oxford Advanced American Dictionary

Check pronunciation: trihedron

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B2

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