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1. The weapons and supplies of war with which a military unit is equipped.
2. often armaments All the military forces and war equipment of a country.
3. A military force equipped for war.
4. The process of arming for war.
[Latin armāmenta, tools, from arma, arms; see arm2.]
ar′ma·men′tar·y (-mĕn′tə-rē, -mĕn′trē) adj.