For Browning we have terms and definitions in 3 topics. The topics are Carpet, Comic Books and Science.

A yellow or brownish discoloration of the carpets face, usually caused by impurities in cellulosic fibers, such as cotton and jute, which wick up to the face fibers on overwetting. Most often caused by: excess alkalinity in the cleaning agent used in steam cleaning; activated alkaline residue left by previous cleaning efforts; overwetting; a combination of any of these. May sometimes appear in shades other than brown or yellow depending on color of affected carpet. Browning is usually corrected with mild solutions of acetic or citric acid, or a mild solution of hydrogen peroxide (3%).A yellow or brownish discoloration of the carpets face, usually caused by impurities in cellulosic fibers, such as cotton and jute, which wick up to the face fibers on overwetting. Most often caused by: excess alkalinity in the cleaning agent used in steam cleaning; activated alkaline residue left by previous cleaning efforts; overwetting; a combination of any of these. May sometimes appear in shades other than brown or yellow depending on color of affected carpet. Browning is usually corrected with mild solutions of acetic or citric acid, or a mild solution of hydrogen peroxide (3%).
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(1) The aging of paper characterized by the ever- increasing level of oxidation characterized by darkening. (2) The level of paper deterioration one step more severe than tanning and one-step before brittleness.
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The darkening of food with exposure to air
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