HyperDic: atomic_number_20

English > 1 sense of the expression atomic number 20:
NOUNsubstanceatomic number 20, calcium, Caa white metallic element that burns with a brilliant light
English > atomic number 20: 1 sense > noun 1, substance
MeaningA white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals.
Synonymscalcium, Ca
Narrowercalcium ion, factor IVion of calcium
Broadermetallic element, metalAny of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
Substance ofcalcium oxide, quicklime, lime, calx, calcined lime, fluxing lime, unslaked lime, burnt limeA white crystalline oxide used in the production of calcium hydroxide
fluorite, fluorspar, fluorA soft mineral (calcium fluoride) that is fluorescent in ultraviolet light
gypsumA common white or colorless mineral (hydrated calcium sulphate) used to make cements and plasters / plasters (especially plaster of Paris)
limestoneA sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals
Spanishcalcio, número atómico 20
Catalancalci, número atòmic 20

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