n
Alternative spelling of aluminium oxide [(inorganic chemistry) The solid, Al₂O₃, commonly known as alumina; it occurs as bauxite, sapphire, ruby and other forms; it is used in the manufacture of ceramics]
n
(chemistry, archaic) ionized silver
n
BaCuSi₂O₆, the pigment Chinese purple / Han purple; BaO·CuO·(SiO₂)₂
n
a family of artificial pigments
n
BaCuSi₄O₁₀, the pigment Chinese blue / Han blue; BaO·CuO·(SiO₂)₄
n
A pale blue pigment, prepared from the native blue carbonate of copper, or from smalt.
n
(inorganic chemistry) CaCuSi₄O₁₀, the pigment Egyptian blue; CaO·CuO·(SiO₂)₄
n
(chemistry)A compound with chemical formula CaWO₄.
n
A precipitated form of copper created by the action of copper sulfate solution on iron
n
(alchemy, obsolete) Copper(II) sulfate (CuSO₄).
n
A pigment made from barium copper tetrasilicate (“BaO·CuO·(SiO₂)₄”), used in ancient China.
n
A pigment made from barium copper disilicate (“BaO·CuO·(SiO₂)₂”), used in ancient China.
n
(chemistry) Any of several crystalline materials, containing a triangular lattice of CoO₂ˣ⁻ anions, that are electrical conductors and have unusual magnetic and thermoelectric properties.
n
An early friction match, containing sulphur, potassium chlorate, and antimony sulphide.
n
Obsolete spelling of copperas [iron(II) sulfate.]
n
(uncountable) A reddish-brown, malleable, ductile metallic element with high electrical and thermal conductivity, symbol Cu, and atomic number 29.
n
(inorganic chemistry) Group 11 of the periodic table, comprising copper, silver, gold and roentgenium
n
(chemistry) the common name for copper(II) sulfate, CuSO₄, which forms blue crystals and is used in agriculture, dyeing, electroplating and many other applications; reducing agents reduce it to the red cuprous sulfate
n
Alternative spelling of copper sulfide [(mineralogy, chemistry) A family of chemical compounds and minerals with the chemical formula CuₓSᵤ.]
n
Obsolete form of copperas. [iron(II) sulfate.]
n
(chemistry, obsolete) copper oxide
n
(inorganic chemistry) Any of several non-stoichiometric compounds, of general formula XYCuₘOₙ, many of which are superconductors.
n
An old term for copper(I) oxide, chemical formula Cu₂O. Used as a pigment, fungicide and antifouling ingredient.
v
to remove or reduce fluorine or fluoride
n
Alternative form of dysodile [(mineralogy) A soft, finely laminated, greenish or yellowish-grey impure earthy or coaly bitumen, which emits a highly foetid odour when burning.]
n
A pigment made from calcium copper tetrasilicate (“CaCuSi₄O₁₀”), the first artificial pigment, a blue, used by Egyptians for over 3 millennia, before dying out during the Roman Empire; one of the few alternates to lapis lazuli during ancient times.
n
(chemistry) An alkaline solution of copper sulphate which changes from blue to red in the presence of an aldehyde or a reducing sugar.
v
(astronautics, transitive, dated) To add fluorine to liquid-oxygen rocket fuel.
adj
(geology) containing fluorine
n
(geology) conversion into fluorite
adj
(geology) Containing fluorite.
adj
(chemistry) Composed of, or derived from, silicon and fluorine.
n
(inorganic chemistry) The rare earth gadolinium oxide
n
A pigment made from barium copper tetrasilicate (“BaCuSi₄O₁₀”), an artificial blue pigment, used by ancient Chinese for over 2 millennia before dying out at the end of the Han dynasty; one of the few alternates to azurite in ancient times.
n
A pigment made from barium copper disilicate (“BaCuSi₂O₆”), the first artificial purple pigment, used by Chinese for over 2 millennia before dying out at the end of the Han dynasty.
n
A red pigment consisting of silica, borax, and soda, fused with copper oxide and used in enamels, mosaics, etc.
n
Alternative spelling of hematite [(mineralogy) An iron ore, mainly peroxide of iron, Fe₂O₃.]
n
A yellow ancient artifical iron oxide made by oxidating iron in vinegar, one of the oldest man-made pigments, often used in staining textiles.
n
(chemistry, obsolete) A bulky white amorphous substance, consisting of a hydrous basic carbonate of magnesium, and used as a mild cathartic.
n
(inorganic chemistry) A white powder (MgO) with a high melting point; it occurs naturally as periclase, an ore of magnesium.
adj
(metallurgy, dated) Containing manganese
n
An alloy of manganese and titanium made by reduction of a mixture of rutile and manganese
n
An earth pigment containing silica, aluminum and ferric oxide
n
(chemistry) Barium sulphate (heavy spar), used as a white pigment or paint, in distinction from white lead, which tarnishes and darkens from the formation of the sulphide.
n
(inorganic chemistry) An insoluble dark, bright blue pigment, ferric ferrocyanide (equivalent to ferrous ferricyanide), used in painting and dyeing, and as an antidote for certain kinds of heavy metal poisoning.
n
finely powdered iron, which ignites spontaneously in air
n
(organic chemistry) A white crystalline substance found in acorns.
n
(possibly obsolete) Copper(II) sulfate; bluestone.
n
Alternative form of sal ammoniac [(mineralogy) a rare mineral composed of ammonium chloride found around volcanic fumaroles and guano deposits.]
n
(obsolete) potassium carbonate
n
A toxic cupric hydrogen arsenite with a greenish-yellow hue, formerly used in paints.
n
Alternative form of scheelium [(chemistry, obsolete) tungsten]
n
A yellowish pigment used by painters in ancient times.
adj
(chemistry) Containing, or composed of, silicon and fluorine.
n
(obsolete) copper sulphate
n
(chemistry, dated) Copper acetate.
n
Alternative spelling of thermite [(chemistry) A mixture of a metal and a metal oxide capable of producing a thermite reaction, such as aluminium metal and ferric oxide; used in incendiary devices.]
n
(chemistry) A mixture of a metal and a metal oxide capable of producing a thermite reaction, such as aluminium metal and ferric oxide; used in incendiary devices.
n
(inorganic chemistry) Prussian blue (especially when viewed as ferrous ferricyanide)
n
(historical, alchemy, chemistry) copper: A reddish-brown, malleable, ductile metallic element with high electrical and thermal conductivity, symbol Cu, and atomic number 29.
n
A form of tungsten carbide used in machining tough materials.
n
Initialism of yttrium, barium, copper, oxygen: component elements used in the manufacture of one type of high-temperature superconducting material. [A silvery metallic chemical element (symbol Y) with an atomic number of 39, mainly found in combination with lanthanide elements in rare-earth minerals.]
n
(uncountable, slang) Iron(III) hydroxide, a yellow-orange solid found in acidic water from mining projects.
n
A concentrated form of uranium ore containing a mixture of oxides.
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