Ecumenopolis is a Greek word that means "world city", and in science fiction represents a planet where urbanization has grown so much to cover its entire surface in an enormous megalopolis.
The most known examples are:
- Coruscant, from Star Wars;
- Trantor, from Asimov's Foundation series, one of the first examples;
- Ravnica, from Magic the Gathering.
Are there other examples of this kind of planet in the science fiction or fantasy genres?