Ziph"i*oid (?), n. (Zoöl.) See Xiphioid.
Zir"co- (?). (Chem.) A combining form (also used adjectively) designating zirconium as an element of certain double compounds; zircono-; as in zircofluoric acid, sodium zircofluoride.
Zir`co*flu"or*ide (?), n. (Chem.) A double fluoride of zirconium and hydrogen, or some other positive element or radical; as, zircofluoride of sodium.
Zir"con (?), n. [F., the same word as jargon. See Jargon a variety of zircon.] (Min.) A mineral occurring in tetragonal crystals, usually of a brown or gray color. It consists of silica and zirconia. A red variety, used as a gem, is called hyacinth. Colorless, pale-yellow or smoky- brown varieties from Ceylon are called jargon.
Zircon syenite, a coarse-grained syenite containing zircon crystals and often also elæolite. It is largely developed in Southern Norway.
Zir"co*na (?), n. [NL.] (Chem.) Zirconia.
Zir"con*ate (?), n. (Chem.) A salt of zirconic acid.
Zir*co"ni*a (?), n. [NL.] (Chem.) The oxide of zirconium, obtained as a white powder, and possessing both acid and basic properties. On account of its infusibility, and brilliant luminosity when incandescent, it is used as an ingredient of sticks for the Drummomd light.
Zir*con"ic (?), a. (Chem.) Pertaining to, containing, or resembling, zirconium; as, zirconic oxide; zirconic compounds.
Zirconic acid, an acid of zirconium analogous to carbonic and silicic acids, known only in its salts.
Zir*co"ni*um (?), n. [NL.] (Chem.) A rare element of the carbon-silicon group, intermediate between the metals and nonmetals, obtained from the mineral zircon as a dark sooty powder, or as a gray metallic crystalline substance. Symbol Zr. Atomic weight, 90.4.
Zir"co*no (?). See Zirco-.
Zir"con*oid (?), n. [Zircon + oid.] (Crystallog.) A double eight-sided pyramid, a form common with tetragonal crystals; -- so called because this form often occurs in crystals of zircon.
Zith"er (?), n. [G. zither. See Cittern.] (Mus.) An instrument of music used in Austria and Germany. It has from thirty to forty wires strung across a shallow sounding-board, which lies horizontally on a table before the performer, who uses both hands in playing on it. [Not to be confounded with the old lute-shaped cittern, or cithern.]
Zit"tern (?), n. (Min.) See Cittern.
||Zi*za"ni*a (?), n. [NL., from L. zizanium darnel, cockle, Gr. &?;.] (Bot.) A genus of grasses including Indian rice. See Indian rice, under Rice.