/ kəˌlæbəˈreɪʃn; NAmE / noun
1.
[ U , C ] collaboration (with sb) (on sth) | collaboration (between A and B) the act of working with another person or group of people to create or produce sth :
She wrote the book in collaboration with one of her students.
The government worked in close collaboration with teachers on the new curriculum.
collaboration between the teachers and the government
It was a collaboration that produced extremely useful results.
2.
[ C ] a piece of work produced by two or more people or groups of people working together
3.
[ U ] ( disapproving ) the act of helping the enemy during a war when they have taken control of your country
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WORD ORIGIN
mid 19th cent.: from Latin collaboratio(n-) , from collaborare work together.