Calcium-oxide

lime1 (def 1).
Also called burnt lime, calcium oxide, caustic lime, calx, quicklime. a white or grayish-white, odorless, lumpy, very slightly water-soluble solid, CaO, that when combined with water forms calcium hydroxide (slaked lime) obtained from calcium carbonate, limestone, or oyster shells: used chiefly in mortars, plasters, and cements, in bleaching powder, and in the manufacture of steel, paper, glass, and various chemicals of calcium.
a calcium compound for improving crops grown in soils deficient in lime.
birdlime.
to treat (soil) with lime or compounds of calcium.
to smear (twigs, branches, etc.) with birdlime.
to catch with or as if with birdlime.
to paint or cover (a surface) with a composition of lime and water; whitewash:
The government buildings were freshly limed.
noun
a white crystalline base used in the production of calcium hydroxide and bleaching powder and in the manufacture of glass, paper, and steel. Formula: CaO Also called lime, quicklime, calx, burnt lime, calcined lime, fluxing lime
noun
short for quicklime, birdlime, slaked lime
(agriculture) any of certain calcium compounds, esp calcium hydroxide, spread as a dressing on lime-deficient land
verb (transitive)
to spread (twigs, etc) with birdlime
to spread a calcium compound upon (land) to improve plant growth
to catch (animals, esp birds) with or as if with birdlime
to whitewash or cover (a wall, ceiling, etc) with a mixture of lime and water (limewash)
noun
a small Asian citrus tree, Citrus aurantifolia, with stiff sharp spines and small round or oval greenish fruits

the fruit of this tree, having acid fleshy pulp rich in vitamin C
(as modifier): lime juice

adjective
having the flavour of lime fruit
noun
any linden tree, such as Tilia europaea, planted in many varieties for ornament
verb
(intransitive) (Caribbean, slang) (of young people) to sit or stand around on the pavement
n.

calcium oxide
A white solid compound that has a very high melting point and reacts with water to form calcium hydroxide. It is often prepared commercially by heating limestone. Calcium oxide is used as an alkali for treating acidic soils and in manufacturing steel, paper, and glass, and it is the main component of lime. Chemical formula: CaO.
lime
(līm)
A white, lumpy, caustic powder made of calcium oxide sometimes mixed with other chemicals. It is made industrially by heating limestone, bones, or shells. Lime is used as an industrial alkali, in waste treatment, and in making glass, paper, steel, insecticides, and building plaster. It is also added to soil to lower its acidity.
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