x_{1} (set/space) is closed under operator/relation x_{2}; x_{2} has closure in x_{1}.

If x_{2} is an operator, then for any n-tuple of elements in x_{1}, the application of x_{2} to that tuple produces an output which is also in x_{1}. The gismu form of this word is "kloje".

- kloje
- x
_{1}(set/space) is closed under(/wrt) operator/relation x_{2}; x_{2}has closure in x_{1}.