Quicklime (noun)

Calcium oxide, a white caustic substance produced by heating limestone and used in making cement and lime wash.

Origin:

From old english cwiclime, from cwic (alive) + lime (stone).

Examples:

1. Quicklime is a chemical compound used in construction.
2. Quicklime is also used to purify water and in the production of sugar.
3. The quicklime reacts violently with water, releasing heat and creating calcium hydroxide.
4. Quicklime is used to remove impurities in the steel-making process.
5. The farmer spread quicklime on the fields to neutralize the acidity of the soil.