Right in re aliena means a right over
The Latin legal term 'ius in re aliena' refers to a specific type of legal right related to property.
To understand the meaning, let's look at its components:
Combining these, 'ius in re aliena' signifies a right that someone holds over a property, but that property does not belong to the person exercising the right. Instead, the property belongs to someone else.
Therefore, 'ius in re aliena' correctly means a right over a property of someone else.