present participle of filter up

The movement or passage of a motorcycle between cars or other vehicles stopped, or moving slowly, in adjacent lanes of traffic.

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

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

Alternative spelling of filter feeder

(chemistry) A glass funnel, into which is placed filter paper or other material, through which a liquid / solid mixture is poured in order to separate them.

Porous paper used for filtration, typically in a filter funnel.

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.

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