metropolis
Concise Oxford English Dictionary © 2008 Oxford University Press:
metropolis /mɪˈtrɒp(ə)lɪs/
▶noun the capital city of a country.
■ a very large and busy city.
– origin ME: via late L. from Gk mētropolis ‘mother state’, from mētēr, mētr- ‘mother’ + polis ‘city’.
'metropolis' also found in these Oxford entries:

