Strontium
31strontium-90 — stronˈtium 90 noun A radioactive isotope of strontium, an important element in nuclear fallout • • • Main Entry: ↑strontium …
32strontium — noun Etymology: New Latin, from strontia strontium oxide, from obsolete English strontian, from Strontian, village in Scotland Date: 1808 a soft malleable ductile metallic element of the alkaline earth group occurring only in combination and used …
33strontium 90 — noun Date: 1952 a heavy radioactive isotope of strontium of mass number 90 that has a half life of 29 years, that is present in nuclear waste and fallout, and that is hazardous because like calcium it can be assimilated in biological processes… …
34strontium 90 — Chem. a harmful radioactive isotope of strontium, produced in certain nuclear reactions and present in their fallout. Also called radiostrontium. [1950 55] * * * …
35strontium-90 — noun The radioactive isotope of strontium, , that is present in the fallout from nuclear explosions and, being chemically similar to calcium, is accumulated in the bones …
36strontium — A metallic element, atomic no. 38, atomic wt. 87.62; one of the alkaline earth series and similar to calcium in chemical and biological properties. Various salts of s. are used therapeutically for their anions; e.g., s. bromide, iodide …
37strontium-85 — A radioactive strontium isotope with a half life of 64.84 days; used in bone imaging …
38strontium-90 — A radioactive strontium isotope; a β emitter with a half life of 29.1 years; a major component (about 5%) of the uranium fission products; it is incorporated into bone tissue where turnover is slow; used in the …
39strontium 85 — a radioactive isotope of strontium, atomic mass 85, having a half life of 64.84 days and decaying by electron capture with emission of gamma rays (0.514 MeV); it is used in the form of the chloride or nitrate salt as a radioactive tracer in bone… …
40strontium 89 — a radioactive isotope of strontium, atomic mass 89, having a half life of 50.55 days; it decays by beta emission (1.488 MeV) and is used as a radiation source in radiation therapy …
