filter
Noun · VerbOpen English WordNet
Verb (3)filters, filtered, filtering
- remove by passing through a filter“filter out the impurities”Synonyms: filtratestrainseparate outfilter outMore general separate
- pass through“Water permeates sand easily”Synonyms: percolatesink inpermeateMore general penetrate, perforateMore specific infiltrate
- run or flow slowly, as in drops or in an unsteady stream“water trickled onto the lawn from the broken hose”“reports began to dribble in”Synonyms: trickledribbleMore general run, flowMore specific leach, percolate
Noun (2)filters
- device that removes something from whatever passes through itType of deviceKinds sponge filter, membrane filter, water filter, bacteria bed, oil filter, glass wool, strainer, diatomaceous earth, filter bed, carbon filter +6 more
- an electrical device that alters the frequency spectrum of signals passing through itType of electrical deviceKinds high-pass filter, low-pass filter
What does it mean? Question 1 of today’s quiz
Translations
Noun device removing impurities
- Spanish
- filtro
- French
- filtre
- German
- Filter
- Italian
- filtro
- Portuguese
- filtro
- Russian
- фильтр filʹtr
- Chinese
- 过滤器 guòlǜqì
- Japanese
- フィルター firutā
- Dutch
- filter
- Polish
- filtr
19 more languages
Verb to sort, sift, or isolate
The main translation for each meaning, from the langtolang.com multilingual dictionary. Each word links to its full entry there.
Webster's Dictionary (1913)
Origin: 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 gallery.
Origin: Cf. F. filter. See Filter, noun, and cf. Filtrate.
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.
To pass through a filter; to percolate.
Same as Philter.
Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54
Free On-line Dictionary of Computing
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 where rest = filter p xs
See also filter promotion. [Jargon File]
The Jargon File
[very common; orig. Unix] 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.