also: いんせん
noun
imperial decree; decree of a cloistered emperor
Historical term referring to an official written order issued by a cloistered emperor (上皇 or 法皇) during the Heian through Muromachi periods. Not used for modern government decrees.
院宣によって、その寺は特別な保護を受けた。
By imperial decree, that temple received special protection.
歴史の授業で、院宣と勅宣の違いを学んだ。
In history class, we learned the difference between an inzen and a chokusen.
Compound of 院 (いん, 'cloistered emperor') and 宣 (せん, 'proclamation'). The reading いんぜん is a standard rendaku form.