Meaning of “tetrahedron” in the English Dictionary

british dictionary

(Definition of “tetrahedron” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"tetrahedron" in American English

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tetrahedronnoun [ C ]

/ˌte·trəˈhi·drən/ plural tetrahedrons or tetrahedra /ˌte·trəˈhi·drə/

geometry a solid shape with four flat, triangular surfaces of equal size

(Definition of “tetrahedron” from the Cambridge Academic Content Dictionary © Cambridge University Press)