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activated carbon a form of very porous and thus very absorbent carbon, produced by heating charcoal so as to empty out contained gases, and used to absorb other gases, recover solvents, deodorize, and the like; activated charcoal.
baba au rhum a light, porous cake, usu. made with yeast and sometimes containing raisins or other dried fruit, that is soaked with rum before serving.
cork a species of oak native to the Mediterranean area, having thick, porous, water-resistant bark. [1/6 definitions]
filter a piece of paper or other porous material, such as charcoal, used to remove solids or other impurities from fluids or gases that pass through it. [1/7 definitions]
filter paper porous paper used to filter liquids, commonly used in certain coffee makers.
nonporous combined form of porous.
percolate to cause (a liquid) to trickle or pass through something porous, such as a filter. [2/6 definitions]
pore fungus a fungus with a pitted or porous surface, that produces spores inside very thin tubules.
porosity the state, quality, or condition of being porous. [1/2 definitions]
pumice light, porous hardened lava, powdered or whole, used as an abrasive and polishing agent. [1/2 definitions]
sealer1 a substance such as varnish that is used to seal a porous surface. [1/2 definitions]
seep to pass gradually through a porous substance. [1/3 definitions]
sizing a glaze or filler for porous surfaces as on paper, cloth, or plaster walls; size. [1/2 definitions]
soak of a liquid, to penetrate or pass through a porous substance (often fol. by in, into, or through). [1/12 definitions]
sponge any of various aquatic animals with a porous body and a tough fibrous or calcareous skeleton formed of irregular clumps or branched masses that are attached to underwater surfaces. [2/10 definitions]
sponge rubber a light porous spongelike rubber used in rubber balls, gaskets, insulation, and the like; foam rubber.
tea bag a small porous bag that holds approximately one teaspoonful of tea, usu. used to make an individual serving of hot tea.
tripoli a porous, lightweight rock consisting of weathered chert or siliceous limestone, used as a polishing powder.