Synoecism From Wikipedia, the free encyclopedia Ancient Greek Synoecismσυνοίκια,[1] συνοικισμός,[2] and othersGovernment • Type Formation of or significant changes to an ancient Greek polis Western gate of Nicopolis, an example of a new polis created by the synoecism of a number of others, which were left abandoned; i.e., Augustus relocated the populations of the surrounding poleis into a new ce..