present participle of filter up

present participle of filter out

(biology) Any aquatic animal that obtains nourishment by filtering particles of food from the water in which it lives.

plural of air filter

A filter for removing dust and other particles from a stream of air, typically used in the air intake of an internal combustion engine, the output of an air compressor, the supply duct of a forced-air furnace, etc.

plural of glare filter

A transparent sheet (usually of glass or plastic) placed over a monitor to reduce glare.

An optical filter in which the wavelengths that are not transmitted are removed by interference rather than by absorption or scattering.

A lane of traffic reserved for those making a specific turn at the next junction

(transitive) To selectively remove part of something. / (intransitive) To come out gradually (e.g. news).