long-term collaboration
nounUK /ˌlɒŋ tɜːm kəˌlæbəˈreɪʃən/
US /ˌlɔːŋ tɝːm kəˌlæbəˈreɪʃən/
Working together with someone for a long time.
The two schools have a long-term collaboration on science projects.
OTHER MEANINGS
2. A business agreement between companies that lasts for many years.
The long-term collaboration between the two firms helped them grow.
3. A lasting friendship where people work on shared goals.
Their long-term collaboration began when they were students.
4. A continuing effort by a group to solve a problem over time.
The long-term collaboration of the neighbors kept the park clean.