| 释义 |
yttrium Chem.|ˈɪtrɪəm|
[mod.L., f. yttria, after names of other metals in -ium.]
A rare metal of the cerium group, the base of the earth yttria. Symbol Y.
1822Imison's Sci. & Art II. 93 The base of yttria has been supposed to be a metallic substance, which would receive the name of yttrium. 1866Roscoe Elem. Chem. 8 The metals yttrium, erbium, indium, &c. have only as yet been met with in most minute quantities.
Hence (or from prec.) yttrialite |ˈɪtrɪəlaɪt| Min., a silicate of thorium and the yttrium metals; yttric |ˈɪtrɪk| a. Chem., related to or containing yttrium; yˈttriferous a., containing or yielding yttrium; yttrious |ˈɪtrɪəs| a., pertaining to or containing yttria; yttrite |ˈɪtraɪt| Min., a synonym of gadolinite.
1889Amer. Jrnl. Sci. XXXVIII. 477 *Yttrialite.
1860Mayne Expos. Lex., Yttricus..*yttric. 1877*yttriferous [see ytter].
1828–32Webster, *Yttrious, pertaining to yttria; containing yttria; as, the yttrious oxyd of columbium. Cleaveland.
1839Ure Dict. Arts 541 Gadolinite; called also *Yttrite and Ytterbite. |