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a tool for selecting or removing a particular type of information: You can apply filters to capture the most relevant data. A filter on the company computer network is designed to block obscene material. a tool for creating special effects on an image: There's a filter that makes all your pictures look like old sepia photographs.
1. a. : a porous article or mass (as of paper or sand) through which a gas or liquid is passed to separate out matter in suspension. b. : an apparatus containing a filter medium. 2. a. : a device or material for suppressing or minimizing waves or oscillations of certain frequencies (as of electricity, light, or sound) b.
noun. 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. any device, as a tank or tube, containing such a substance for filtering.
A machine or device that removes dangerous or unwanted materials from a substance passing through it is called a filter. A kitchen water filter makes the water safer to drink — and also taste better.
To filter a substance, or to filter particles out of a substance, means to pass it through a device which removes the particles from it. You must boil or filter the water here to make it safe to drink.
noun. /ˈfɪltə (r)/ /ˈfɪltər/ a device containing paper, sand, chemicals, etc. that a liquid or gas is passed through in order to remove any materials that are not wanted. an air/oil filter. a coffee/water filter. filter paper for the coffee machine. He smokes cigarettes without filters. Topics Scientific research c1. Definitions on the go.
1. a. A porous material through which a liquid or gas is passed in order to separate the fluid from suspended particulate matter. b. A device containing such a material, especially one used to extract impurities from air or water. 2. a.
