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noun
1.
any substance, as cloth, paper, porous porcelain, or a layer of charcoal or sand, through which liquid or gas is passed to remove suspended impurities or to recover solids.
2.
any device, as a tank or tube, containing such a substance for filtering.
3.
any of various analogous devices, as for removing dust from air or impurities from tobacco smoke, or for eliminating certain kinds of light rays.
4.
Informal. a filter-tipped cigarette or cigar.
5.
EXPANDPhotography. a lens screen of dyed gelatin or glass for controlling the rendering of color or for diminishing the intensity of light.
6.
Electronics, Physics. a circuit or device that passes certain frequencies and blocks others.
7.
COLLAPSEMathematics. a collection of subsets of a topological space, having the properties that the intersection of two subsets in the collection is a subset in the collection and that any set containing a subset in the collection is in the collection.
verb (used with object)
8.
to remove by the action of a filter.
9.
to act as a filter for; to slow or partially obstruct the passage of: The thick leaves filtered the sunlight.
10.
to pass through or as through a filter.
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Filtered
is always a great word to know.
So is quincunx. Does it mean:
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
verb (used without object)
11.
to pass or slip through slowly, as through an obstruction or a filter: Enemy agents managed to filter into the embattled country.
Origin:
1375–1425; late Middle English filtre < Medieval Latin filtrum felt, piece of felt used to strain liquids < Germanic; see felt2
1375–1425; late Middle English filtre < Medieval Latin filtrum felt, piece of felt used to strain liquids < Germanic; see felt2
Related forms
fil·ter·er, noun
non·fil·ter, noun
o·ver·fil·ter, verb (used with object)
pre·fil·ter, noun
re·fil·ter, verb (used with object)
EXPANDSynonyms
11. penetrate, sift, seep, trickle, leak.
11. penetrate, sift, seep, trickle, leak.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source
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