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7 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 yt·tri·um /ˈɪtriəm/

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 yt·tri·um /ˈɪtrɪəm/ 名詞

From: Taiwan MOE computer dictionary

 釔 Y; YT

From: Network Terminology


From: Webster's Revised Unabridged Dictionary (1913)

 Yt·tri·um n.  Chem. A rare metallic element of the boron-aluminium group, found in gadolinite and other rare minerals, and extracted as a dark gray powder.  Symbol Y.  Atomic number 39.  Atomic weight, 88.9.  [Written also ittrium.]
 Note:Associated with yttrium are certain rare elements, as erbium, ytterbium, samarium, etc., which are separated in a pure state with great difficulty. They are studied by means of their spark or phosphorescent spectra. Yttrium is now regarded as probably not a simple element, but as a mixture of several substances.

From: WordNet (r) 2.0

      n : a silvery metallic element that is common in rare-earth
          minerals; used in magnesium and aluminum alloys [syn: Y,
           atomic number 39]

From: Elements database 20001107

 Symbol: Y
 Atomic number: 39
 Atomic weight: 88.905
 Silvery-grey metallic element of group 3 on the periodic table. Found in
 uranium ores. The only natural isotope is Y-89, there are 14 other
 artificial isotopes. Chemically resembles the lanthanoids. Stable in the
 air below 400 degrees, celsius. Discovered in 1828 by Friedrich Wohler.