/ liˈeɪz; NAmE / verb [ v ]
1.
liaise (with sb) ( especially BrE ) to work closely with sb and exchange information with them :
He had to liaise directly with the police while writing the report.
2.
liaise (between A and B) to act as a link between two or more people or groups :
Her job is to liaise between students and teachers.
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WORD ORIGIN
1920s (originally military slang): back-formation from liaison .