What is "supercities"

Usage examples of "supercities".

Cats were the most popular, since they adapted easily to the mile-high million-windowed hovels that formed the supercities, but a few breeds of dogs—Keeshonds, Shih Tzus, Lhasa Apsos, and a handful of others still existed in some quantity.

From New York, brainpox would rocket to London and Tokyo, and it would fly to Lagos, Nigeria, and it would land in Shanghai and Sipgapore, and it would amplify through Calcutta, and it would get to Sao Paulo and Mexico City and Dacca in Bangladesh and Djakarta in Indonesia and all the great supercities of the earth.

A lot of them were arising naturally-more than ten billion people crammed into polluted supercities constitute a wonderland of opportunity for virus evolution-and a lot more were being tailored in labs for use as transgenic vectors, pest controllers, so-called beneficial fevers, and so on.