lime (mineral)

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lime1 / līm/ • n. (also quick·lime) a white caustic alkaline substance consisting of calcium oxide, obtained by heating limestone. ∎  (also slaked lime) a white alkaline substance consisting of calcium hydroxide, made by adding water to quicklime. ∎  (in general use) any of a number of calcium compounds, esp. calcium hydroxide, used as an additive to soil or water. ∎ archaic birdlime. • v. [tr.] 1. treat (soil or water) with lime to reduce acidity and improve fertility or oxygen levels. ∎  [often as adj.] (limed) give (wood) a bleached appearance by treating it with lime: limed oak dining furniture. 2. archaic catch (a bird) with birdlime. DERIVATIVES: lim·y / ˈlīmē/ adj. (lim·i·er , lim·i·est ) . lime2 • n. 1. a rounded citrus fruit similar to a lemon but greener, smaller, and with a distinctive acid flavor. 2. (also lime tree) the evergreen citrus tree (Citrus aurantifolia) that produces this fruit, widely cultivated in warm climates. 3. a bright light green color like that of a lime. lime3 (also lime tree) • n. another term for linden, esp. the European linden.

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lime. When limestone is burned it produces quicklime (calcium oxide), which, when slaked with water, becomes calcium hydroxide. Limeis the chief ingredient of mortar, plaster,stucco, etc.


W. Papworth (1852)

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lime1 birdlime; mortar, cement; calcium oxide. OE. līm, corr. to MDu., OHG. līm (Du. lijm, G. leim), ON. lím; f. Gmc. *līm-, var. of *laim- LOAM, ult. rel. to L. līmus.
Hence vb. XIII.

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lime Compounds, mostly of calcium carbonates but also other basic (alkaline) substances, used to correct soil acidity and occasionally as a fertilizer to supply magnesium.