sɪmˈækɪ

Definitions

1. noun

A formal alliance or league, especially of monarchies or sovereign states, for mutual defense or other purposes.

“The ancient Greeks formed a symmachy with the Romans to counter the threat of the Persian Empire.”

2. noun

A temporary alliance or partnership between two or more parties for a specific goal or purpose.

“The company formed a symmachy with a rival firm to develop a new technology.”