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Lengua inglesa
filter
noun
1 a porous substance that allows liquid, gas, smoke, etc through, but traps solid matter, impurities, etc.
2 a device containing this.
3 a fibrous pad at the unlit end of a cigarette that traps some of the smoke's impurities, such as tar.
4 a transparent tinted disc used to reduce the strength of certain colour frequencies in the light entering a camera or emitted by a lamp.
5 elec , radio a device for suppressing the waves of unwanted frequencies.
6 Brit a traffic signal at traffic lights that allows vehicles going in some directions to proceed while others are stopped.
verb (filtered , filtering )
1 tr & intr to pass something through a filter, often to remove impurities, particles, etc.
2 (usu filter something out) to remove it (eg impurities from liquids, gases, etc) by filtering.
3 intr to go past little by little.
4 intr (usu filter through or out) said of news: to leak out, often gradually.
5 intr , Brit said of vehicles: to proceed with one of the streams of traffic at a filter. See also filtrate.
[16c in the form filtre : from Latin filtrum felt used as a filter]
© Hodder Education

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