ultrafilter

ultrafilter
ultrafiltration /ul'treuh fil tray"sheuhn/, n.
/ul'treuh fil"teuhr/, n.
1. Physical Chem. a filter for purifying sols, having a membrane with pores sufficiently small to prevent the passage of the suspended particles.
2. Math. 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.
v.t.
3. Physical Chem. to purify by means of an ultrafilter.
[ULTRA- + FILTER]

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  • ultrafilter — ul•tra•fil•ter [[t]ˌʌl trəˈfɪl tər[/t]] n. 1) chem. a filter for purifying sols, having a membrane with pores sufficiently small to prevent the passage of the suspended particles 2) chem. to purify by means of an ultrafilter • Etymology: 1905–10… …   From formal English to slang

  • ultrafilter — /ʌltrəˈfɪltə/ (say ultruh filtuh) noun 1. a filter for the separation of solute molecules of different sizes, using a semipermeable membrane filter through which the solute cannot pass. –verb (t) 2. to separate in an ultrafilter …  

  • últrafílter — tra m (ȗ í) teh. naprava za filtracijo, navadno pod zvišanim tlakom, ki se uporablja za ločevanje koloidnih delcev in makromolekulskih snovi od tekočine: ultracentrifuga in ultrafilter …   Slovar slovenskega knjižnega jezika

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