1
moving forward (e.g. of a vehicle);onward movement
2
progress (of work, activities, etc.);advance;making headway
その仕事は現在進行しています。
The work is now in progress.
3
progression (of a disease, global warming, etc.)
このころ、病気の進行は遅くなった。
About this time, the disease slowed.
4
progression (e.g. chord progression)