Is Munitions Singular or Plural?

The plural form of munition is munitions.

What munition means?

1 archaic : rampart, defense. 2 : armament, ammunition.

What's the difference between munitions and ammunitions?

Ammunition (informally ammo) is the material fired, scattered, dropped or detonated from any weapon or weapon system. ... Ammunition and munitions are often used interchangeably, although munition now usually refers to the actual weapons system with the ammunition required to operate it.