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strontium 90

Pronunciation: stron'she-um

Definition: A radioactive strontium isotope; a ß 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 to treat some ocular conditions (pterygia).

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.