partproblem

noun
UK /ˈpɑːtˌprɒbləm/
US /ˈpɑːrtˌprɑːbləm/

A partproblem is a small problem that is just one piece of a bigger problem.

The broken wheel was only a partproblem; the whole bike needed fixing.


OTHER MEANINGS

2. A question that must be answered before the main question can be solved.

Finding the missing number was a partproblem before solving the whole puzzle.

3. One section of a math exercise that has several steps.

She finished the first partproblem and moved on to the next step.

4. A trouble that only affects one small part of something.

The scratch on the door was a partproblem, not a big deal for the car.