Noun: supercity 'soo-pu(r),si-tee
- A very large urban complex (usually involving several cities and towns)
"The Boston-Washington supercity stretches along the eastern seaboard";
- megalopolis, megaregion [US]
- An extremely large metropolitan area with a population exceeding 10 million
"Mexico City grew into a supercity in the late 20th century";
- megacity
Derived forms: supercities
Type of: populated area, urban area
Encyclopedia: Supercity