Chem. [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.
1822. Imison’s Sci. & Art, II. 93. The base of yttria has been supposed to be a metallic substance, which would receive the name of yttrium.
1866. Roscoe, 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 Min., a silicate of thorium and the yttrium metals; Yttric a. Chem., related to or containing yttrium; Yttriferous a., containing or yielding yttrium; Yttrious a., pertaining to or containing yttria; Yttrite Min., a synonym of GADOLINITE.
1889. Amer. Jrnl. Sci., XXXVIII. 477. *Yttrialite.
1860. Mayne, Expos. Lex., Yttricus … *yttric.
1877. *yttriferous [see YTTER].
1828–32. Webster, Yttrious, pertaining to yttria; containing yttria; as, the yttrious oxyd of columbium. Cleaveland.
1839. Ure, Dict. Arts, 541. Gadolinite; called also *Yttrite and Ytterbite.
