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English word filter comes from Proto-Indo-European *pilto, Proto-Indo-European *peld-, and later Proto-Germanic *feltaz (Felt.)
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*pilto (Proto-Indo-European)
*peld- (Proto-Indo-European)
*feltaz (Proto-Germanic)
Felt.
*filtir (Frankish)
filtrum (Malayalam)
filtre (Middle English)
filter (English)
(figurative) self-restraint in speech.. (mathematics, order theory) A non-empty upper set (of a partially ordered set) which is closed under binary infima (a.k.a. meets).. A device which separates a suspended, dissolved, or particulate matter from a fluid, solution, or other substance; any device that separates one substance from another.. Any item, mechanism, device or procedure that acts [...]