ALL meanings of ultrafilter
ul·tra·fil·ter
U u - noun ultrafilter Physical Chemistry. a filter for purifying sols, having a membrane with pores sufficiently small to prevent the passage of the suspended particles. 1
- noun ultrafilter Mathematics. a filter in a topological space, having the property that no other filter exists in the space having among its subsets all the subsets in the given filter. 1
- verb with object ultrafilter Physical Chemistry. to purify by means of an ultrafilter. 1
- noun ultrafilter a filter with small pores used to separate very small particles from a suspension or colloidal solution 0