Ancient Greek: thalasso-: sea


Ancient Greek: -polis: city



noun. a city that floats on the water.


With the right amount of funding, a thalassapolis would be necessary to adapt to rising sea level.


floating city, sea-steading


I actually coined this term in an article I wrote a while ago, describing whether sea-cities will become more popular as sea levels rise. It looks like the topic is becoming more relevant, and I figured that it would be worth examining.

This is similar to the other neologism nephopolis which involves a floating, artificial city, however while a nephopolis involves a city in the sky, this city floats on the water, specifically a sea or an ocean.


  • Sheppard, Randy. “Tenochtitlan/Mexico City.” Flickr. Taken on June 5, 2007. CC BY-SA 2.0.
  • Ynkawen, Robescot. “Are Floating Cities The Future Of Human Civilization?” 2nd Edition. Eblaterno. 2021.
  • Ynkawen, Robescot. “Nephopolis | Brimo’s Neologism.” Brilafamo.

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