Inclusive usually means that something is left unspecified and implicitly integrated or summed over. Inclusivity is always with respect to something, e.g. "inclusive with respect to the number of jets" would typically mean that no particular number of jets is required.
At hadron colliders, the high production rate of jets and their many possible sources mean that inclusive used on its own often refers to inclusive with respect to jet (or hadronic) activity.
The qualifier inclusive can be applied to:
- Exclusive, the opposite