filter /filˈtər/

1. An apparatus for purifying a fluid of solid matter by pouring it through porous material
2. A device for wholly or partly eliminating undesirable frequencies from light, radio or electric currents
3. A filter tip (qv below)
4. A program, or part of one, that alters data systematically (computing)
5. (at a road junction) an auxiliary traffic light in the form of a green arrow which allows one lane of traffic to move while the main stream is held up

1. To pass through a filter
2. To separate by a filter (esp with out)

1. To pass through a filter
2. To percolate
3. To pass gradually and dispersedly through obstacles
4. To join gradually a stream of traffic
5. (of a lane of traffic) to move in the direction specified by the filter
6. To become known gradually (figurative)

filterabilˈity or filtrabilˈity noun

filˈterable or filˈtrable adjective

1. Able to pass through a filter (see filter-passer below)
2. Capable of being filtered

filˈtrate transitive verb and intransitive verb

To filter or percolate

A filtered liquid

filtrāˈtion noun

(an) act or process of filtering

filter bed noun

A bed of sand, gravel, clinker, etc used for filtering water or sewage

filter cake noun

A mass of material trapped by a filter

filter coffee noun

Coffee made by allowing water to pass through a filter paper containing ground coffee

filˈter-feeder noun

An aquatic animal that filters its food from the water

filˈter-feeding noun

filter paper noun

Porous paper for use in filtering

filˈter-passer or filterable virus noun

Terms used formerly for a virus in the sense of submicroscopic disease agent

filter tip noun

A cigarette with a filter at the mouth end, to reduce the smoker's ingestion of impurities

filˈter-tippedˈ adjective

• monodies
• purse-snatcher
• purse-snatchers
• purse-snatching
• purse strings
• purse-taking
• pursew
• pursier
• pursiest
• pursiness
• pursinesses
• pursing
• palpations
• palpebral
• palped
• palpi
• palping
• palpitant
• palpitate
• palpitated
• palpitates
• palpitating
• palpitation
• palpitations
• palps