Filter Definition–noun | 1. | any substance, as cloth, paper, porous porcelain, or a layer of charcoal or sand, through which liquid or gas is passed to remove suspended impurities or to recover solids. | | 2. | any device, as a tank or tube, containing such a substance for filtering. | | 3. | any of various analogous devices, as for removing dust from air or impurities from tobacco smoke, or for eliminating certain kinds of light rays.<
1202
/td> | | 4. | Informal. a filter-tipped cigarette or cigar. | | 5. | Photography. a lens screen of dyed gelatin or glass for controlling the rendering of color or for diminishing the intensity of light. | | 6. | Electronics, Physics. a circuit or device that passes certain frequencies and blocks others. | | 7. | Mathematics. a collection of subsets of a topological space, having the properties that the intersection of two subsets in the collection is a subset in the collection and that any set containing a subset in the collection is in the collection. | –verb (used with object) | 8. | to remove by the action of a filter. | | 9. | to act as a filter for; to slow or partially obstruct the passage of: The thick leaves filtered the sunlight. | | 10. | to pass through or as through a filter. | –verb (used without object) | 11. | to pass or slip through slowly, as through an obstruction or a filter: Enemy agents managed to filter into the embattled country. | |
From Dictionary
Related topics from Britannica |
Related topics from Technorati |
|
|
|
