tetrapolis

From Greek τετράπολις.

tetrapolis (plural tetrapoleis)

1. A group of four cities.
   • 2010, Lewis Richard Farnell, The Cults of the Greek States, page 108:

     We may also conclude that as it was the Ionic γένη of the Attic tetrapolis who in the main achieved the Ionization of Athens, so it was a branch of this same stock that settled at Delos […]

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