Part 31

Yowe (?), n. [See Ewe.] (Zoöl.) A ewe. [Prov. Eng. & Scot.] G. Eliot.

Yowl (?), v. i. [See Yawl, v. i.] To utter a loud, long, and mournful cry, as a dog; to howl; to yell.

Yowl, n. A loud, protracted, and mournful cry, as that of a dog; a howl.

Yow"ley (?), n. [Cf. Yellow.] (Zoöl.) The European yellow-hammer. [Prov. Eng.]

Yox (?), v. i. See Yex. [Obs.] Chaucer.

Y*pight" (?), obs. p. p. of Pitch. See Pight.

Yp"o*cras (?), n. Hippocras. [Obs.] Chaucer.

Y"pres lace` (?). Fine bobbin lace made at Ypres in Belgium, usually exactly like Valenciennes lace.

Yp*sil"i*form (?), a. [Gr. &?; &?; the name of the letter &?; + -form.] (Biol.) Resembling the &?; in appearance; -- said of the germinal spot in the ripe egg at one of the stages of fecundation.

Yp"si*loid (?), a. (Anat.) In the form of the letter Y; Y-shaped.

Y*raft" (?), obs. p. p. of Reave. Bereft. Chaucer.

Yr"en (?), n. Iron. [Obs.] Chaucer.

Y*ron"ne (?), obs. p. p. of Run. Run. Chaucer.

Y*same" (?), adv. [See Same.] Together. [Obs.] "And in a bag all sorts of seeds ysame." Spenser.

{ Yt, Yt (t) }, an old method of printing that (AS. þæt, ðæt) the "y" taking the place of the old letter "thorn" (þ). Cf. Ye, the.

Y*throwe" (?), obs. p. p. of Throw. Chaucer.

Yt*ter"bic (?), a. (Chem.) Pertaining to, or derived from, ytterbium; containing ytterbium.

Yt*ter"bi*um (?), 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.

Ytterbium is associated with other rare elements, and probably has not been prepared in a pure state.

Yt"tri*a (?), n. [NL. See Yttrium.] (Chem.) The oxide, Y2O3, or earth, of yttrium.

Yt"tric (?), a. (Chem.) Pertaining to, derived from, or containing, yttrium.

Yt*trif"er*ous (?), a. Bearing or containing yttrium or the allied elements; as, gadolinite is one of the yttriferous minerals.

Yt"tri*ous (?), a. (Chem.) Same as Yttric.

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 weight, 89. [Written also ittrium.]

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.

Yt`tro-ce"rite (?), n. (Min.) A mineral of a violet-blue color, inclining to gray and white. It is a hydrous fluoride of cerium, yttrium, and calcium.

{ Yt`tro-co*lum"bite (?), Yt`tro-tan"ta*lite (?), } n. (Min.) A tantalate of uranium, yttrium, and calcium, of a brown or black color.

||Yu (?), n. [Chin.] (Min.) Jade.