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English definition of “tetrahedron”


noun [C]     /ˌtet.rəˈhiː.drən/ (plural tetrahedrons or tetrahedra   /-drə/   ) specialized
a solid shape whose four surfaces are triangles Geometrical shapesSpherical, circular and annular objects
(Definition of tetrahedron noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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