requisition

Short definition from Wiktionary

Noun

1. 1
   A formal request for something: A formal demand made by one state or government upon another for the surrender or extradition of a fugitive from justice.
2. 2
   A formal request for something: A notarial demand for repayment of a debt.
3. 3
   A formal request for something: A formal request by a doctor or other clinician, usually on a standardized form, for specific medical tests or procedures to be performed on a patient by a third party, such as a laboratory or imaging center
4. 4
   A formal request for something: A demand by the invader upon the people of an invaded country for supplies, as of provision, forage, transportation, etc.
5. 5
   A formal request for something: A formal application by one officer to another for things needed in the public service.
6. 6
   That which is required by authority; especially, a quota of supplies or necessaries.
7. 7
   A call; an invitation; a summons.

Verb

1. 1
   To demand something, especially for a military need of staff, supplies, or transport.