(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.
Zircon syenite, a coarse-grained syenite containing zircon crystals and often also elæolite. It is largely
developed in Southern Norway.
(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.
(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.
Zirconic acid, an acid of zirconium analogous to carbonic and silicic acids, known only in its salts.
(Zir*con"ic) a. (Chem.) Pertaining to, containing, or resembling, zirconium; as, zirconic oxide;
(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.