The agreement soldered the factions into an alliance.
Origin of solder
- Middle English soudur from Old French soudure, soldure from souder, soulder to solder from Latin solidāre to make solid from solidus solid solid
From American Heritage Dictionary of the English Language, 5th Edition
- From Middle English solderen, from Old French solder (Modern French souder) from Latin solidÄre, present active infinitive of solidÅ (“make solid").