iridium

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iridium

 (Ir) [ĭ-rid´e-um, i-rid´e-um]
a chemical element, atomic number 77, atomic weight 192.2. (See Appendix 6.)

i·rid·i·um (Ir),

(ī-rid'ē-ăm),
A white, silvery metallic element, atomic no. 77, atomic wt. 192.22; 192Ir is a radioisotope (half-life of 73.83 days) that has been used in the interstitial treatment of certain tumors.
[L. iris, rainbow]

iridium

/irid·i·um/ (Ir) (ĭ-rid´e-um) chemical element, at. no. 77.
iridium Ir 192  an artificial radioactive isotope with a half-life of 75 days, used in radiotherapy.

iridium (Ir)

[irid′ē·əm]
Etymology: Gk, iris, rainbow
a silvery-bluish metallic element. Its atomic number is 77; its atomic mass is 192.22.

ir·id·i·um

(Ir) (ī-rid'ē-ŭm)
A white, silvery metallic element, atomic no. 77, atomic wt. 192.22; 192Ir is a radioisotope that has been used in the interstitial treatment of some tumors.
[L. iris, rainbow]

ir·id·i·um

(Ir) (ī-rid'ē-ŭm)
A white, silvery metallic element. 192Ir is a radioisotope that has been used in the interstitial treatment of tumors.
[L. iris, rainbow]

iridium (Ir) (irid´ēəm),

n a silvery-bluish metallic element. Its atomic number is 77 and its atomic weight is 192.2.

iridium

a chemical element, atomic number 77, atomic weight 192.2, symbol Ir. See Table 6.
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