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Meaning of FILTER

Pronunciation:  'filtur

WordNet Dictionary
  1. [n]  device that removes something from whatever passes through it
  2. [n]  an electrical device that alters the frequency spectrum of signals passing through it
  3. [v]  pass through; "Water permeates sand easily"
  4. [v]  remove by passing through a filter; "filter out the impurities"
  5. [v]  run or flow slowly, or in an unsteady stream; "reports began to dribble in."

FILTER is a 6 letter word that starts with F.


 Synonyms: dribble, filter out, filtrate, percolate, permeate, separate out, sink in, strain, trickle
 See Also: air cleaner, air filter, bacteria bed, coffee filter, course, device, diatomaceous earth, diatomite, diffusing screen, drain basket, electrical device, filter bed, flow, fuel filter, glass wool, infiltrate, kieselguhr, leach, light filter, oil filter, penetrate, percolate, perforate, run, separate, strainer, water filter



Webster's 1913 Dictionary
  1. \Fil"ter\, n. [F. filtre, the same word as feutre felt,
    LL. filtrum, feltrum, felt, fulled wool, this being used for
    straining liquors. See {Feuter}.]
    Any porous substance, as cloth, paper, sand, or charcoal,
    through which water or other liquid may passed to cleanse it
    from the solid or impure matter held in suspension; a chamber
    or device containing such substance; a strainer; also, a
    similar device for purifying air.
    {Filter bed}, a pond, the bottom of which is a filter
       composed of sand gravel.
    {Filter gallery}, an underground gallery or tunnel, alongside
       of a stream, to collect the water that filters through the
       intervening sand and gravel; -- called also {infiltration
  2. \Fil"ter\, v. t. [imp. & p. p. {Filtered}; p. pr. & vb.
    n. {Filtering}] [Cf. F. filter. See {Filter}, n., and cf.
    To purify or defecate, as water or other liquid, by causing
    it to pass through a filter.
    {Filtering paper}, or {Filter paper}, a porous unsized paper,
       for filtering.
  3. \Fil"ter\, v. i.
    To pass through a filter; to percolate.
  4. \Fil"ter\, n.
    Same as {Philter}.
Computing Dictionary

1. (Originally unix, now also ms-dos) A program that processes an input data stream into an output data stream in some well-defined way, and does no I/O to anywhere else except possibly on error conditions; one designed to be used as a stage in a pipeline (see plumbing). Compare sponge.

2. (functional programming) A higher-order function which takes a predicate and a list and returns those elements of the list for which the predicate is true. In haskell:

        filter p []     = []
        filter p (x:xs) = if p x then x : rest else rest
                          rest = filter p xs

See also filter promotion.

[jargon file]

Biology Dictionary
 Definition: Layer of even-graded rock between rock riprap and backfill soil to prevent extrusion of the soil through the riprap.
Thesaurus Terms
 Related Terms: bleed, bolt, butterfly, cheesecloth, clarifier, clarify, clean, clear, cloth, colander, condense, cradle, cribble, decrassify, depurate, diffusing screen, discharge, distill, drain, dribble, drip, dripple, drop, edulcorate, effuse, eliminate, elute, emit, essentialize, exclude, excrete, exfiltrate, extract, extravasate, exudate, exude, filtrate, frosted glass, frosted lens, gauze, gelatin filter, give off, ground glass, gurgle, leach, lens hood, light filter, lixiviate, lixiviator, membrane, ooze, pass through, percolate, percolator, purifier, purify, rectify, reek, refine, refiner, refinery, riddle, rocker, run through, screen, seep, separate, sieve, sift, sifter, smoked glass, spiritualize, spurtle, stained glass, strain, strainer, sublimate, sublime, transude, trickle, try, weed out, weep, winnow, winnowing basket, winnowing fan, winnowing machine