synoecism
noun
syn·oe·cism
| \ sə̇ˈnēˌsizəm\
variants:
or less commonly synoicism \ -nȯiˌkizəm , -nȯiˌsi- \
plural -s
Definition of synoecism
1
: a joining together : union
specifically
: a uniting of several towns or villages into one community (as in ancient Greece)
2
: the condition of being synoecious
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