ittrium

ittrium
Yttrium Yt"tri*um, n. [NL., from Ytterby, in Sweden. See {Erbium}.] (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}.] [1913 Webster +PJC]

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. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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Look at other dictionaries:

  • Ittrium — It tri*um ([i^]t tr[i^]*[u^]m), n. [NL.] See {Yttrium}. [1913 Webster] …   The Collaborative International Dictionary of English

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  • Yttrium — Yt tri*um, n. [NL., from Ytterby, in Sweden. See {Erbium}.] (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 …   The Collaborative International Dictionary of English

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