Word: tetrahedronal
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Originator of the geodesic dome and the mass-produceable Dymaxion house, Fuller bases his more efficient architecture on his discovery that the tetrahedron (a pyramid composed of four triangles) has extraordinarily great synergetic force. If one takes six rods and constructs them into a tetrahedron, the strength of the whole is far greater than the sum of the strength of its parts...
...built after working them out mathematically. One typical globular molecule looked like a crocheted doily cut up and sewed together in a three-dimensional geometrical object. This she described as a "polyhexagonal lacelike pattern of atoms with the characteristic lacunae or holes, the whole forming a truncated tetrahedron, a cage-like space enclosing a structure roughly resembling a six-point diamond." Molecules in this weight class were called "space-enclosing cyclols." Significance of this work is that the way a molecule is built is bound up with its chemical behavior...