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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

yt·tri·um (Y),

(it'rē-ŭm),
A metallic element, atomic no. 39, atomic wt. 88.90585.
[Ytterby, village in Sweden]
Farlex Partner Medical Dictionary © Farlex 2012

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
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

yt·tri·um

(Y) (it'rē-ŭm)
A metallic element, atomic no. 39, atomic wt. 88.90585.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

yt·tri·um

(Y) (it'rē-ŭm)
A metallic element used in lasers.
Medical Dictionary for the Dental Professions © Farlex 2012