0 the situation of two or more people working together to create or achieve the same thing:
The new airport is a collaboration between two of the best architects in the country.
The two playwrights worked in close collaboration (with each other) on the script.
1 the situation of people working with an enemy who has taken control of their country:
She was accused of collaboration.
2 the act of working together with other people or organizations to create or achieve something:
Universities and companies are working together in a spirit of collaboration to develop new solutions.
in collaboration with The mission is being conducted in collaboration with the European space agency.
(a) collaboration between The new airport is the result of a collaboration between two of the best architects in the country.