De jure

De jure (in Classical Latin de iure) is an expression that means "based on law", as contrasted with de facto, which means "in fact".

Related Topics:
Classical Latin - Law - De facto

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The terms de jure and de facto are used like "in principle" and "in practice" when one is describing political situations. They are also often used when discussing racial segregation. A practice may exist de facto, where the people obey a contract as though there were a law. A process known as "desuetude" may allow de facto practices to become law. On the other hand, practices may exist de jure and not be obeyed or observed by the people.

Related Topics:
Political - Racial segregation - Desuetude

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The Latin de jure should not be confused with the French du jour which translates to "of the day", as, for example, in soupe du jour.

Related Topics:
French - Soupe du jour

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De jure and de facto standards can differ; for example, the U.S. has no de jure language, whereas the de facto language is English. Similarly, the U.S. de jure standard for measurement of road distances is the kilometre (as the U.S. is party to the Convention du Mètre), but the de facto standard is the mile.

Related Topics:
U.S. - Kilometre - Convention du Mètre - Mile

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