noun
allocation
al-uh-KAY-shun/ˌæləˈkeɪʃn/
The assignment of resources or responsibilities for a particular purpose.
The volunteer's allocation of supplies gives each planting tray its own tools.

Etymology
Built on 'to place,' this action noun presents distribution as assigning things to their intended places or purposes. Its earlier English sense was 'authorization,' rather than the act of distribution itself.
In context
river water allocation, my colleague and I had differing opinions on prioritizing agricultural needs versus environmental protection.
More examples
- Our department's allocation will cover two new computers.
- The project needs a clearer allocation of responsibilities.
- Water allocations are reduced during the drought.
Forms
allocation · allocations
allocate verb — To assign something for a particular purpose.
Similar words
- distribution
- Emphasizes how shares are spread or delivered.
- allotment
- Often names the specific share rather than the assignment process.