(chemistry) the calcium salt of sorbic acid

(chemistry) the calcium salt of benzoic acid

(chemistry) the calcium salt of formic acid; used in the scrubbing of flue gases, and as a food preservative

(inorganic chemistry) A black, solid, of formula CaC₂, manufactured from lime and carbon at high temperatures; reacts with water to form acetylene.

(inorganic chemistry) A white powderous substance, CaO, normally made by heating calcium carbonate.

(inorganic chemistry) A soft, white powder, Ca(OH)₂, obtained by the action of water on calcium oxide; slaked lime.

(physics) A minor stable isotope of calcium, ⁴⁴₂₀Ca, having twenty protons and twenty-four neutrons; it amounts to about 2% of the element in nature

(physics) A minor stable isotope of calcium, ⁴²₂₀Ca, having twenty protons and twenty-two neutrons; it amounts to about 0.6% of the element in nature

(physics) The major stable isotope of calcium, ⁴⁰₂₀Ca, having twenty protons and twenty neutrons; it amounts to almost 97% of the element in nature

(physics) A rare stable isotope of calcium, ⁴⁶₂₀Ca, having twenty protons and twenty-six neutrons; it amounts to only 0.004% of the element in nature