noun, plural tet·ra·he·drons, tet·ra·he·dra [te-truh-hee-druh] /ˌtɛ trəˈhi drə/.
Words nearby tetrahedron
Examples from the Web for tetrahedra
The atoms are arranged in two tetrahedra with a common apex, and the relationship is maintained in the meta-body, a septet.
The globe, e, is a new form, the four tetrahedra of the proto level making a single twelve-atomed one on the meta.
The smallest particles of fire are tetrahedra, of air octahedra, of water icosahedra.A Critical History of Greek Philosophy|W. T. Stace