interdepartmental

adj

Between departments; to do with the connection of departments. / Involving multiple departments; multidepartmental.

The interdepartmental collaboration has improved communication between different departments.

意味（1）

Between departments; to do with the connection of departments.

I sent the memo to the accounting department via interdepartmental mail.

意味（2）

Involving multiple departments; multidepartmental.

The memo discussed a new interdepartmental project that would require resources from nearly every group.