noun

1. a requiring, as by right or authority; formal demand
2. a formal written order, request, or application, as for equipment, tools, etc.
3. the state of being demanded for service or use
4. Rare a requirement; indispensable condition
5. Law a demand by one government upon another for the surrender of a fugitive criminal

Etymology: L requisitio < requisitus, pp. of requirere: see require

transitive verb

1. to demand or take, as by authority to requisition food for troops
2. Now Rare to demand from; make demands on to requisition a town for food
3. to submit a written order or request for (equipment, etc.)