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Definition of ammunition

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Houghton Mifflin

am·mu·ni·tion  audio  (my-nshn) KEY 

  1. Projectiles, such as bullets and shot, together with their fuses and primers, that can be fired from guns or otherwise propelled.
  2. Nuclear, biological, chemical, or explosive material, such as rockets or grenades, that are used as weapons.
  3. An object used as a missile in offense or defense: Rocks were my only ammunition against the bear.
  4. A means of attacking or defending an argument, thesis, or point of view.

Obsolete French amunition, from l'amunition, the provisioning, alteration of la munition, from Old French, from Latin mnti, mntin-, fortification ; see munition

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