filternoun [ C ]
uk/ˈfɪl.tər/us/ˈfɪl.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 thin piece of plastic or glass placed in front of a camera lens in order to change the colour or amount of light entering it:
a tool for selecting or removing a particular type of information:
a tool for creating special effects on an image:
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Straining & filtering devices
- filter bed
- filter paper
- funnel
- greaseproof paper
- hopper
- parchment paper
- sieve
- sifter
- strainer
- tea strainer
- water filter
- wringer
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:
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Roads: lights, signs & markings on roads
- amber
- Belisha beacon
- billboard
- bollard
- bus lane
- cat's eyes
- crossing
- lamppost
- milestone
- P, p
- pedestrian crossing
- pelican crossing
- reflector
- stop sign
- stoplight
- street furniture
- streetlight
- thoroughfare
- yellow line
- zebra crossing
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filterverb
uk/ˈfɪl.tər/us/ˈfɪl.t̬ɚ/filter verb (APPEAR GRADUALLY)
C2 [ I + adv/prep ] to appear or happen gradually or to a limited degree:
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Appearing & disappearing
- act
- bubble up
- come up
- conjure
- creep
- disappear off the face of the earth idiom
- do a disappearing/vanishing act idiom
- emerge
- emergence
- erupt
- evaporate
- face
- form
- manifestation
- melt
- pop
- puff
- pull
- pull sth up
- wither
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filter verb (REMOVE)
C2 [ T ] to remove solids from liquids or gases, or to remove particular types of light, using special equipment:
[ T ] to select or remove a particular type of information from something:
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Removing and extracting
- ablate
- clear the decks idiom
- cream sth/sb off
- descale
- dislodge
- extract
- gouge
- milk
- pull
- pull (sb/sth) out
- pull a gun, knife, etc. on sb idiom
- pump
- pump out sth
- removable
- remove
- scoop
- scratch
- siphon
- syphon
- take sth away
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