i 1 n 1 t 1 e 1 r 1 d 2 e 1 p 3 a 1 r 1 t 1 m 3 e 1 n 1 t 1 a 1 l 1
17 letters · 22 points in Scrabble
Meaning
adjective between or among departments
adverb between departments
originFrom inter- + department + -al.
Etymology from Wiktionary, CC BY-SA 3.0