DictionaryRoot: -al
French
-al
pertaining to
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adjective
departmental
dee-pahrt-MEN-tuhl/ˌdiːpɑːrtˈmentl/
Relating to a division of an organization or institution.
Etymology
The pieces point to dividing something into parts. A department came to mean a distinct branch within a larger organization, so departmental describes what belongs to or concerns such a branch.