ustavus
Ustavus is a Latinized term that appears in some historical and legal scholarship as a generic designation for foundational documents such as constitutions, charters, or statutes within Slavic legal traditions. It is not the name of a specific, widely recognized document, organization, or place. Instead, ustavus is used by scholars as a neutral label for a document whose vernacular title would be the word ustav in the relevant Slavic language.
Etymology and usage: The term derives from the Slavic noun ustav, meaning foundation, establishment, or order,
In modern scholarship, references to ustavus are relatively rare and typically occur in discussions of constitutionalism,