Sentence:  In 1962 Yona Friedman predicted that the entire world population would be agglomerated into 1000 big cities.⁵ Also in the early 1960s Constantinos A. Doxiadis envisaged an “ecumenopolis”⁶ consisting of groups of major cities linked to each other (by air traffic and electronic communications) more firmly than to the surrounding districts of the countries in which they are located. A global elite, crossing national boundaries daily, would be the ultimate form of civilization. According to metabolist theory set out by Kisho Kurokawa in 1967, each of these cities would be a “metapolis,” an urban unit for <WSD>ecumenopolitans</WSD> built in “super-architecture”: “A Metapolis will be a junction point of mobile information. It will also be the place from which directives are issued.”⁷ Singapore "is" the apotheosis of Metabolism. 
Meaning of the word marked with <WSD> tags:  An inhabitant of an ecumenopolis, especially one actively involved in its political arena.