Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “filter”

See all translations

filter

noun [C] uk   /ˈfɪl.tər/ us    /-t̬ɚ/

filter noun [C] (EQUIPMENT)

C2 any of several types of equipment or devices for removing solids from liquids or gases, or for removing particular types of light: a water filter a dust filter I like to experiment with different light filters on my camera. Ozone is the Earth's primary filter for ultraviolet radiation.

filter noun [C] (TRAFFIC)

UK a green, arrow-shaped light that is part of a set of traffic lights and tells drivers when they can turn left or right: a traffic filter a left/right filter

filter

verb uk   /ˈfɪl.tər/ us    /-t̬ɚ/

filter verb (APPEAR GRADUALLY)

C2 [I + adv/prep] to appear or happen gradually or to a limited degree: News filtered down to us during the day. Reports about an accident began to filter in. Sunlight filtered through the branches.

filter verb (REMOVE)

C2 [T] to remove solids from liquids or gases, or to remove particular types of light, using special equipment: The water is filtered to remove any impurities. Devices in the two chimneys would filter (out) (= remove) radioactive dust.
Phrasal verbs
Translations of “filter”
in Korean 필터, 여과 장치…
in Arabic مِصْفاة…
in French filtre…
in Turkish süzmek, süzgeçten geçirmek, elemek…
in Italian filtro…
in Chinese (Traditional) 除去物件的裝置, 濾器, 過濾器…
in Russian фильтровать, процеживать…
in Polish filtrować…
in Spanish filtro…
in Portuguese filtro…
in German der Filter, Filter-……
in Catalan filtre…
in Japanese フィルター…
in Chinese (Simplified) 除去物件的设置, 滤器, 过滤器…
(Definition of filter from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of filter?
Add Cambridge dictionaries to your browser to your website

Definitions of “filter” in other dictionaries

Word of the Day

juggernaut

a very large, heavy truck

Word of the Day

The way we move (Verbs for walking and running)

by Kate Woodford,
March 25, 2015
​​​ This week we’re looking at interesting ways to describe the way that people move. Most of the verbs that we’ll be considering describe how fast or slow people move. Others describe the attitude or state of mind of the person walking or running. Some describe both. Starting with verbs for walking slowly,

Read More 

crossfit noun

March 23, 2015
high-intensity strength training Two women in strappy dresses discussed how much weight they could snatch

Read More