A demand or request (such as for supplies) made with proper authority.
The teachers had grown impatient with having to submit a requisition for even routine classroom supplies.
Requisition is both a noun and a verb. We can speak of sending a requisition to the purchasing department, but we also refer to soldiers requisitioning food from civilians. The word has a bureaucratic flavor, but one of Hollywood's bittersweet love stories begins when Omar Sharif, playing a World War II freedom fighter, says to Ingrid Bergman, who is the owner of a stately old yellow Rolls Royce, "I've come to requisition your car."