Historical abbreviation for 帝国大学 (teikoku daigaku), the pre-1947 imperial universities. Used in historical contexts or when referring to the former system.
See also: 帝国大学
He graduated from an imperial university before the war.
Materials from the imperial university era remain in the library.
former imperial university
Abbreviation of 帝国大学 (teikoku daigaku, 'imperial university'), formed by taking the first character of each component.