również: działający, uczestniczący aktywnie w przedsięwzięciu
There are multiple definitions - click on the translation that matches your context.
a person or entity that has invested money into a partnership and who is involved in its daily operations
The Executive Committee may request a Partner who otherwise would become a Senior Counsel to remain an active Partner.
a person or entity that is actively involved in a project, task, or achieving a goal etc
Duke has made a commitment to our community to be an active partner in helping our region move beyond coal.