yttrium

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yttrium

 [ĭ´tre-um]
a chemical element, atomic number 39, atomic weight 88.905, symbol Y. (See Appendix 6.) The radioisotope 90Y emits high energy beta particles, localizes predominantly in bone, and has been used in radiotherapy.

yt·tri·um (Y),

(it'rē-ŭm),
A metallic element, atomic no. 39, atomic wt. 88.90585.
[Ytterby, village in Sweden]

yttrium

 An ultrarare metalic element–atomic number, 39; atomic weight, 88.9–named after Ytterby in southern Sweden, which may be used in nuclear medicine scans

yt·tri·um

(Y) (it'rē-ŭm)
A metallic element, atomic no. 39, atomic wt. 88.90585.

yt·tri·um

(Y) (it'rē-ŭm)
A metallic element used in lasers.