filter
See also: Filter
English
Etymology
From Middle English filtre, from Medieval Latin filtrum (compare also Old French feutre (“felt; filter”)), from Frankish *filtir, from Proto-Germanic *feltaz. See felt.
Pronunciation
- (Received Pronunciation) IPA(key): /ˈfɪltə/
- (General American) IPA(key): /ˈfɪltɚ/, [ˈfɪɫɾɚ]
Audio (US) (file) - Rhymes: -ɪltə(r)
Noun
filter (plural filters)
- A device which separates a suspended, dissolved, or particulate matter from a fluid, solution, or other substance; any device that separates one substance from another.
- Electronics or software that separates unwanted signals (for example noise) from wanted signals or that attenuates selected frequencies.
- Any item, mechanism, device or procedure that acts to separate or isolate.
- 2013 May 25, “No hiding place”, in The Economist, volume 407, number 8837, page 74:
- In America alone, people spent $170 billion on “direct marketing”—junk mail of both the physical and electronic varieties—last year. Yet of those who received unsolicited adverts through the post, only 3% bought anything as a result. If the bumf arrived electronically, the take-up rate was 0.1%. And for online adverts the “conversion” into sales was a minuscule 0.01%. That means about $165 billion was spent not on drumming up business, but on annoying people, creating landfill and cluttering spam filters.
- He runs an email filter to catch the junk mail.
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- (figuratively) self-restraint in speech.
- He's got no filter, and he's always offending people as a result.
- (mathematics, order theory) A non-empty upper set (of a partially ordered set) which is closed under binary infima (a.k.a. meets).
- The collection of cofinite subsets of ℝ is a filter under inclusion: it includes the intersection of every pair of its members, and includes every superset of every cofinite set.
- If (1) the universal set (here, the set of natural numbers) were called a "large" set, (2) the superset of any "large" set were also a "large" set, and (3) the intersection of a pair of "large" sets were also a "large" set, then the set of all "large" sets would form a filter.
Antonyms
- (order theory): ideal
Hyponyms
- air filter
- cigarette filter
- fuel filter
- glare filter
- intent filter
- oil filter
- ultrafilter
Derived terms
- clear-filter
- filter bed
- (order theory): ultrafilter
Translations
device for separating impurities from a fluid or other substance
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electronics or software to separate unwanted signal
any device or procedure that acts to separate or isolate
collection of subsets
- The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout#Translations.
Verb
filter (third-person singular simple present filters, present participle filtering, simple past and past participle filtered)
- (transitive) To sort, sift, or isolate.
- This strainer should filter out the large particles.
- 1954, Alexander Alderson, chapter 5, in The Subtle Minotaur:
- “You have probably never seen anything like this before, Mr. Toler. It is baleen, or if you prefer it, whalebone, taken from the mouth of the bowhead whale. It is used by the whale to filter its food.”
- (transitive) To diffuse; to cause to be less concentrated or focused.
- The leaves of the trees filtered the light.
- (intransitive) To pass through a filter or to act as though passing through a filter.
- The water filtered through the rock and soil.
- (intransitive) To move slowly or gradually; to come or go a few at a time.
- The crowd filtered into the theater.
- (intransitive) To ride a motorcycle between lanes on a road
- I can skip past all the traffic on my bike by filtering.
Synonyms
- (to sort, sift, or isolate) to filter out (something)
Translations
to sort, sift, or isolate
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to diffuse
to pass through a filter or to act as though passing through a filter
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to come or go a few at a time
- The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout#Translations.
Related terms
Danish
Dutch
Pronunciation
Audio (file)
Hungarian
Etymology
From German Filter, from Medieval Latin filtrum.[1]
Pronunciation
- IPA(key): [ˈfiltɛr]
- Hyphenation: fil‧ter
Declension
Inflection (stem in -e-, front unrounded harmony) | ||
---|---|---|
singular | plural | |
nominative | filter | filterek |
accusative | filtert | filtereket |
dative | filternek | filtereknek |
instrumental | filterrel | filterekkel |
causal-final | filterért | filterekért |
translative | filterré | filterekké |
terminative | filterig | filterekig |
essive-formal | filterként | filterekként |
essive-modal | — | — |
inessive | filterben | filterekben |
superessive | filteren | filtereken |
adessive | filternél | filtereknél |
illative | filterbe | filterekbe |
sublative | filterre | filterekre |
allative | filterhez | filterekhez |
elative | filterből | filterekből |
delative | filterről | filterekről |
ablative | filtertől | filterektől |
Possessive forms of filter | ||
---|---|---|
possessor | single possession | multiple possessions |
1st person sing. | filterem | filtereim |
2nd person sing. | filtered | filtereid |
3rd person sing. | filtere | filterei |
1st person plural | filterünk | filtereink |
2nd person plural | filteretek | filtereitek |
3rd person plural | filterük | filtereik |
References
- Tótfalusi, István. Idegenszó-tár: Idegen szavak értelmező és etimológiai szótára (A Storehouse of Foreign Words: an explanatory and etymological dictionary of foreign words’). Budapest: Tinta Könyvkiadó, 2005. →ISBN
Norwegian Bokmål
Noun
filter n (definite singular filteret or filtret, indefinite plural filter or filtre, definite plural filtra or filtrene)
- a filter
Derived terms
Related terms
Norwegian Nynorsk
Noun
filter n (definite singular filteret, indefinite plural filter, definite plural filtera)
- a filter
Derived terms
Swedish
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