noun which may take the genitive case particle 'no', noun
authorized by imperial or royal order; appointed by the emperor
Used in historical contexts for laws, books, or officials sanctioned directly by an emperor or monarch. Modern equivalents would use terms like 勅定 or 勅命.
A constitution by imperial decree is a form of constitution enacted by a monarch.
imperially granted constitution
From Chinese 欽定 (qīndìng), meaning 'compiled or authorized by imperial order'. The first character 欽 means 'to respect' or 'imperial', and 定 means 'to decide' or 'to establish'.