Commissary Law and Legal Definition
Commissary means a person who is delegated to perform some responsibility or duty. Ordinarily, the term is used to refer to the representative of a superior. It also refers to a an ecclesiastical officer whose functions were similar to those of an archdeacon.
When used in the context of military law, commissary means a general store or a lunchroom on a military base. In early days, commissary was the title used for the officer of an army in command of the commissariat.