geodesic dome

noun

1. a light, domelike structure developed by R. Buckminster Fuller to combine the properties of the tetrahedron and the sphere and consisting essentially of a grid of compression or tension members lying upon or parallel to great circles running in three directions in any given area, the typical form being the projection upon a sphere of an icosahedron, the triangular faces of which are filled with a symmetrical triangular, hexagonal, or quadrangular grid.

noun

1. a light structural framework arranged as a set of polygons in the form of a shell and covered with sheeting made of plastic, plywood, metal, etc; developed by Buckminster Fuller

1. A domed or vaulted structure of straight elements that form interlocking polygons.