1) Burnt lime 2) Calcined lime 3) Calcium oxide 4) Calx 5) Cement ingredient 6) Fluxing lime 7) Lime 8) Oxide 9) Plaster ingredient 10) Unslaked lime 1) Calx 2) Oxide 
calcium oxide
• (a.) Calcium oxide; unslacked lime; -- so called because when wet it develops great heat. See 4th Lime, 2.
calcium oxide, an alkaline inorganic compound of calcium (q.v.).
CaO, calcium oxide, a caustic material made from limestone which has been burned to drive off the carbon dioxide, remains very unstable until slaked. See lime. 
Calcium oxide which is a crushed limestone that has been calcined.
calcium oxide, used in certain oil-base muds to neutralize the organic acid. 
Quick'lime noun [ See Quick , adjective ] (Chemistry) Calcium oxide; unslacked lime; -- so called because when wet it develops great heat. See 4th Lime , 2. 
Type: Term Pronunciation: kwik′līm Definitions: 1. Unslaked lime. See: lime2
Quicklime (calcium oxide) is a substanced produced by heating limestone or chalk to drive off the carbonic acid.
Calcium oxide which is crushed limestone that has been calcined.
Calcium oxide
lime (def. 1).