in·ter·de·part·men·tal 
(ĭn′tər-dē′pärt-mĕntl)
(ĭn′tər-dē′pärt-mĕntl)adj.
Involving or representing different departments, as of a business, academic institution, or government: interdepartmental cooperation.
- Peter
- Peter
- Peter
- Peterborough
- Peter Brian
- Peter Demianovich
- Peter Edward
- Peter I
- Peter II
- Peter Ilich
- Peter Levin
- Peter Mark
- Peter Maxwell
- Peter Neville Luard
- "Peter of Amiens."
- Peter or Pierre Valdès.
- Peter Pan collar
- Peter Paul
- Peter Paul
- Peter Principle
- Petersburg
- Peter Seamus
- Peterson
- Peterson
- Peter's pence