subfaculty

noun

sub·​fac·​ul·​ty ˌsəb-ˈfa-kəl-tē 

variants or sub-faculty

plural subfaculties or sub-faculties

: a subdivision of a faculty

… the various faculties and subfaculties into which the university was, and is, divided: the faculties of letters, social sciences, law, mathematics and natural sciences, medicine, and so forth; and the subfaculties within these faculties, such as political science and sociology in the social sciences, and the subfaculty of history in the faculty of letters.

—Arend Lijphart

Word History

First Known Use

1871, in the meaning defined above