Definition of "collaborative"

In the literature class, which is conducted by Prof. George J. Smith, lately of Central High School, and which is a collaborative of Dr. Farquhar's course, the students are pursuing their new course.

1895, (no by-line), "In The Halls of Learning: Columbian University", The Evening Times (Washington, DC) (19 October 1895, page 2) -- this appears to be a unique usage; very difficult to find non-adjectival uses prior to the 1970s

Concern over possible conflict between their collaborative and one set up a year ago ....

1976, (no by-line), "Educational collaborative to hire full-time executive", The Birkshire Eagle (Pittsfield, Massachusetts (19 June 1976, page 6)

These collaboratives would consist of a team of managers, researchers, and consultants from a variety of organizations whose aim would be to better understand problems in effective health care management […]

2004, Ann Page, Keeping Patients Safe‎, page 153

This collaborative aims at discussing ways in which patients can participate in the FDA's regulatory discussions about medical products.

2018, Applied Clinical Trials Editors, “CTTI Selected to Support FDA Efforts to Increase Patient Engagement”, in Applied Clinical Trials