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yttrium-90

Pronunciation: it're-um

Definition: An artificial radioactive isotope with a physical half-life of 2.67 days, which decays with the emission of a 2.282 MeV ß particle; used as an implant in pituitary ablation.

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

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