Hausdorff space

[ hous-dawrf, houz- ]
/ ˈhaʊs dɔrf, ˈhaʊz- /

noun Mathematics.

a topological space in which each pair of points can be separated by two disjoint open sets containing the points.

Origin of Hausdorff space

named after Felix Hausdorff (1868–1942), German mathematician, who first described it