De jure

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De jure (in Classical Latin de iure) is an expression that means "of law", as contrasted with de facto, which means "in fact". De jure should not be confused with the French du jour, which translates to "of the day", as in soupe du jour.

The terms de jure and de facto are used instead of "in principle" and "in practice", respectively, when one is describing political situations.

In a legal context, de jure is also translated as "by law". A practice may exist de facto, where for example the people obey a contract as though there were a law enforcing it yet there is no such law. A process known as "desuetude" may allow de facto practices to replace obsolete laws. On the other hand, practices may exist de jure and not be obeyed or observed by the people.

Social sciences and other usages

As a logic complement of "de facto", where "de facto" have a more generic acception (not so restrictive as at legal context), like in social sciences. See de facto standards and other usages.

See also

• List of Latin phrasesaf:De jure

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