Wiktionary
n. the scientific study of human settlements, and the planning and design of cities and other communities
Wikipedia
Ekistics concerns the science of human settlements, including regional, city, community planning and dwelling design. The study involves every kind of human settlement, with particular attention to geography, ecology, human psychology, anthropology, culture, politics, and occasionally aesthetics.
As a scientific mode of study, ekistics currently relies on statistics and description, organized in five ekistic elements or principles: nature, anthropos, society, shells, and networks. It is generally a more scientific field than urban planning, and has considerable overlap with some of the less restrained fields of architectural theory.
In application, conclusions are drawn aimed at achieving harmony between the inhabitants of a settlement and their physical and socio-cultural environments.