Learning Curve

The time it takes to master a skill.

The boss said that using the new computer program would speed up order processing. The first week the program was installed the order processing time doubled. By the second week it was faster than it had ever been. The first week the processing was slow because the employees were struggling to learn the program. We would say the learning curve was one week.

https://accounting.uworld.com/cpa-review/lc/accounting-dictionary/term/learning-curve/