is a termed coined by Italian architect Paolo Soleri in 1959 to describe the
concept of Architecture and Ecology working as an integral system. Arcology designs are fully 3-dimensional
mega-structure cities which can (theoretically) achieve much greater
efficiencies, and promote more social interaction than 2-dimensional cities,
while using far less land and consuming fewer resources. See also the FAQ of
Arcosanti [Definition by Nathan Koren].