The Collaborative International Dictionary
Subdepartment \Sub`de*part"ment\, n. A subordinate department; a bureau. See the Note under Bureau.
Wiktionary
n. a subordinate department, bureau
Usage examples of "subdepartment".
Recreation was a subdepartment of Medicine, and Harb Tanzer reported directly to Dr.
Nathaniel had long been interested in Internal Affairs, a subdepartment of the sprawling Security apparatus headed by Jessica Whitwell.
A sea of people flooded around her across the Plaza of Public Affairs, office workers and bureaucrats going about their daily work between the offices in the ministry basements, and the scattered subdepartments and public malls at the other side of the open space.
It didn't seem all that different from the portion of the complex he was familiar with: corridors going every which way, numerous doors with signs indicating the departments and subdepartments contained within, and what seemed to be a fair-sized auditorium at the far end of the largest corridor.