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calcium-45
(physics) A radioactive isotope of calcium, ⁴⁵₂₀Ca, having twenty protons and twenty-five neutrons, and a half-life of 162.6 days; it is used as a tracer in studying calcium metabolism. As it decays it undergoes transformation (nuclear transmutation) via electron emission, also called negative beta decay (β−-decay), into scandium.
calcium-46
(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
calcium copper tetrasilicate
calcium sodium polyphosphate
calcium disodium EDTA
calcium channel blocker
(pharmacology) A class of drug used to treat hypertension and also angina and arrhythmia.
calcium channel blockers
calcium pyrophosphate dihydrate deposition disease
(medicine) A medical condition, also called pseudogout or CPPD, which resembles gout but results from precipitation of crystals in the joints by a different compound.