ALL meanings of prefilter
fil·ter
P p - noun prefilter 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. 1
- noun prefilter any device, as a tank or tube, containing such a substance for filtering. 1
- noun prefilter any of various analogous devices, as for removing dust from air or impurities from tobacco smoke, or for eliminating certain kinds of light rays. 1
- noun prefilter something that works like a filter, as by removing, blocking, or separating out certain elements: Kids often talk without a filter. Events can be distorted through the filter of memory. 1
- noun prefilter Informal. a filter-tipped cigarette or cigar. 1
- noun prefilter Photography. a lens screen of dyed gelatin or glass for controlling the rendering of color or for diminishing the intensity of light. 1
- noun prefilter Electronics, Physics. a circuit or device that passes certain frequencies and blocks others. 1
- noun prefilter 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. 1
- verb with object prefilter to remove by the action of a filter. 1
- verb with object prefilter to act as a filter for; to slow or partially obstruct the passage of: The thick leaves filtered the sunlight. 1
- verb with object prefilter to pass through or as through a filter. 1
- verb without object prefilter to pass or slip through slowly, as through an obstruction or a filter: Enemy agents managed to filter into the embattled country. 1