Of an official document: that expresses or conveys a request or demand. Frequently as postmodifier, esp. in letter requisitory.

Of, relating to, or of the nature of a petition.

Of the nature of, constituting, or containing a petition.

= requisitory, adj. 1a. Occasionally as postmodifier.

With the sense ‘that has been requisitioned’, as requisition horse, requisition man.

Of, relating to, or expressing a desire. Cf. precative, adj.