yttrium

(redirected from Element 39)
Also found in: Dictionary, Thesaurus, Encyclopedia.

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

/yt·tri·um/ (ĭ´tre-um) chemical element, at. no. 39, symbol Y. The radioisotope 90Y emits high energy beta particles, localizes predominantly in bone, and has been used in radiotherapy.

yttrium (Y)

[it′rē·əm]
Etymology: Ytterby, Sweden
a scaly, grayish metallic element. Its atomic number is 39, and its atomic mass (weight) is 88.905. Radioactive isotopes of yttrium have been used in cancer therapy.

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.

yttrium (Y) (it´rēəm),

n a scaly, grayish metallic element with an atomic number of 39 and an atomic weight of 88.9059. Radioactive isotopes of yttrium have been used in cancer therapy.

yttrium

a chemical element, atomic number 39, atomic weight 88.905, symbol Y. See Table 6.