obs. p. p. of Throw. Chaucer. [ 1913 Webster ]
a. (Chem.) Pertaining to, or derived from, ytterbium; containing ytterbium. [ 1913 Webster ]
n. [ NL., fr. Ytterby, in Sweden. See Erbium. ] (Chem.) A rare element of the boron group, sometimes associated with yttrium or other related elements, as in euxenite and gadolinite. Symbol Yb; provisional atomic weight 173.2. Cf. Yttrium. [ 1913 Webster ]
☞ Ytterbium is associated with other rare elements, and probably has not been prepared in a pure state. [ 1913 Webster ]
n. [ NL. See Yttrium. ] (Chem.) The oxide,
a. (Chem.) Pertaining to, derived from, or containing, yttrium. [ 1913 Webster ]
a. Bearing or containing yttrium or the allied elements;
a. (Chem.) Same as Yttric. [ 1913 Webster ]
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
☞ 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 ]
n. (Min.) A mineral of a violet-blue color, inclining to gray and white. It is a hydrous fluoride of cerium, yttrium, and calcium. [ 1913 Webster ]