[1] : The Collaborative International Dictionary of English v.0.48

filter \fil"ter\, v. t. imp.  p. p. filtered; p. pr.  vb.
   n. filtering cf. f. filter. see filter, n., and cf.
   filtrate.
   to purify or defecate, as water or other liquid, by causing
   it to pass through a filter.
   1913 webster

   filtering paper, or filter paper, a porous unsized paper,
      for filtering.
      1913 webster
see also:
filtered filtering filter filtrate filtering paper filter paper 

[2] : Moby Thesaurus II by Grady Ward, 1.0

38 moby thesaurus words for "filtering":
   bolting, clarification, colature, destructive distillation,
   distillation, edulcoration, effusion, elution, elutriation,
   essentialization, excretion, exfiltration, extraction,
   extravasation, exudation, filtration, leaching, lixiviation, ooze,
   oozing, percolating, percolation, purification, refinement,
   riddling, screening, seep, seepage, separation, sieving, sifting,
   spiritualization, straining, sublimation, transudation, weep,
   weeping, winnowing

Filtering >> F Words
Filtering, definition of term: Filtering
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