Filter
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The term filter may refer to:
- A device to separate mixtures. See filter (chemistry), filter (water), filter (air).
- A device to remove or block certain wavelengths (colors) of light. See filter (optics), filter (photography), infrared filter
- A computer program to process a data stream. See filter (software), filter (Unix), mail filter, printer filter, Internet filter, lameness filter.
- An electronic or mechanical device, or mathematical algorithm, for affecting the harmonic content of signals. See electronic filter, signal processing, audio filter.
- In mathematics, a certain kind of subset of a partially ordered set. See filter (mathematics)
See also
- Affective filter, a type of learning blockage.
- Conversion
- Filter coffee, a hot drink
- Filter feeder, an animal that strains food particles from water
- Filter (band), a 1990s industrial rock band
- Philter, a magical charm
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