单词	tetrahedron
释义	English American tetrahedronnoun [ C ] uk/ˌtet.rəˈhiː.drən/us/ˌtet.rəˈhiː.drən/plural tetrahedrons or tetrahedra uk/-drə/usspecialized a solid shape whose four surfaces are triangles Thesaurus: synonyms and related words Geometrical shapes -cornered -dimensional arch asymmetric circular cuboid cylinder cylindrical dome hexagon incongruent isometric lozenge ovoid parallelogram polygon quadrilateral rhombus spherical triangle See more results » tetrahedronnoun [ C ] /ˌte·trəˈhi·drən/plural tetrahedrons or tetrahedra /ˌte·trəˈhi·drə/ geometry a solid shape with four flat, triangular surfaces of equal size
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