Latin expression, roughly meaning 'by law', often opposed to 'de facto', meaning 'in fact' or 'in practice'
In law and government, de jure ( day JOOR-ee, dee -, - YOOR-ee, ; lit. 'by law') describes practices that are legally recognized, regardless of whether the practice exists in reality. In contrast, de facto ('in fact') describes situations that exist in reality, even if not formally recognized. Wikipedia