n
(obsolete) Former name for the chemical element astatine.
n
A rejected name for astatine.
n
(chemistry, obsolete) A rejected name for ytterbium.
n
(inorganic chemistry) Alternative spelling of aluminium hydroxide [(inorganic chemistry) The hydrated form of alumina, having the formula Al(OH)₃; it reacts with bases to form aluminates.]
n
(obsolete) Obsolete form of aluminium/aluminum. (metallic element)
n
Proposed name for the chemical element astatine.
n
A rejected name for einsteinium.
n
(obsolete) A rejected name for neptunium.
n
(chemistry, obsolete) A rejected name for darmstadtium.
n
(chemistry) beryllium oxide
n
(chemistry, obsolete) A rejected name for praseodymium.
n
(chemistry) Former name of rhenium.
n
(chemistry, obsolete) A supposed chemical element isolated from thorium.
n
(obsolete) The original name of the element lutetium.
n
A rejected name for fermium.
n
(obsolete) A former name of niobium.
adj
(chemistry) Containing copper with an oxidation number of 1.
n
A rejected name for the chemical element promethium.
n
A supposed chemical element discovered in 1877, later found to be a mixture of iridium and rhodium.
n
(obsolete) Proposed name for a chemical element isolated from samarskite, later found to be a mixture of samarium and other rare earth elements.
n
(chemistry, obsolete) Niobium.
n
(chemistry, obsolete) A rejected name for rutherfordium.
n
A metallic chemical element (symbol Dy) with atomic number 66: a rare earth element with a metallic silver lustre.
n
(chemistry) untriennium (dvi-lanthanum)
n
(chemistry, archaic) gallium
n
(chemistry, archaic) technetium
n
(chemistry, archaic) bohrium
n
(chemistry, archaic) germanium
n
(chemistry, archaic) dubnium
n
(chemistry, archaic) seaborgium
n
Alternative spelling of eka-aluminium [(chemistry, archaic) gallium]
n
(chemistry, archaic) gallium, as a hypothetical element before its discovery
n
(chemistry) the name given by Dmitri Mendeleev to the predicted element (technetium) lying below manganese in the periodic table
n
(chemistry, element, obsolete) The predicted element lying below silicon in the periodic table — later named germanium.
n
(chemistry, disused nomenclature) Promethium.
n
(chemistry, obsolete) A rejected name for dubnium.
n
(obsolete) A rejected name for plutonium.
n
(obsolete) A rejected name for promethium.
n
(obsolete) A supposed chemical element, later found to be a mixture of niobium and tantalum.
adj
(chemistry) containing tetravalent iridium
n
A proposed name for the chemical element nihonium
n
(obsolete) A rejected name for hafnium.
n
(chemistry, obsolete) A rejected name for dubnium.
n
Obsolete form of cobalt. [A chemical element (symbol Co) with an atomic number of 27: a hard, lustrous, silver-gray metal.]
n
(physics) A rejected name for rutherfordium.
n
(chemistry) the lithium salt of niobic acid, LiNbO₃, whose transparent crystals are used lasers and other optical devices
n
(uncountable) A metallic chemical element (symbol Mn) with an atomic number of 25, not a free element in nature but often found in minerals in combination with iron, and useful in industrial alloy production.
n
(inorganic chemistry) Group seven of the periodic table, comprising manganese, technetium, rhenium and bohrium.
n
(chemistry, obsolete) A rejected name for indium.
n
(chemistry, obsolete) A rejected name for protactinium.
n
Alternative form of metargon [(chemistry, obsolete) A supposed noble gas, once thought to exist in minute amounts in the atmosphere as a result of a flawed study of density spectra.]
n
(chemistry, obsolete) A rejected name for dubnium (105).
n
(obsolete) A rejected name for hafnium.
n
(chemistry) any organometallic compound of an actinide, especially one having an unusually high coordination number
n
(obsolete) An early proposed name for the element vanadium
n
An early proposed name for the element technetium
n
(chemistry, science fiction) A substance encountered in the series Star Trek, which can be converted to trilithium.
n
(obsolete) A supposed chemical element, later found to be a mixture of niobium and tantalum.
n
(chemistry, obsolete) A supposed metallic element obtainable from samarskite, later discovered to be a mixture of yttrium and terbium.
n
A rejected name for the chemical element promethium.
n
(chemistry) The unipositive cation of rhodocene.
n
A proposed name for the element nihonium
n
(obsolete) A rejected name for seaborgium.
n
Rare spelling of roentgenium. [A transuranic chemical element (symbol Rg) with atomic number 111.]
n
(obsolete) An early name for the element neptunium, based on a discredited claim of discovery.
n
(mineralogy) The mineral stannite.
n
A natural mineral salt containing compounds of sodium chlorate and sodium carbonate, used by the Aztecs and later Mexicans as a food seasoning and leavening agent.
n
(chemistry) The actinocene cyclooctatetraenide with chemical formula U(C₈H₈)₂, one of the first organouranium compounds to be synthesized.
adj
(mineralogy) Containing pentavalent vanadium.
n
(chemistry, obsolete) A supposed rare metallic element extracted from Vesuvian lava, of uncertain composition.
n
(obsolete) A supposed chemical element discovered in 1898, later found to be a mixture of rare earths.
n
(chemistry, obsolete) A rejected name for francium.
n
(chemistry, archaic) A supposed chemical element extracted from wasite, later identified as thorium.
n
(obsolete) A supposed chemical element, now discredited.
n
(chemistry, obsolete) A supposed chemical element, later found to be a mixture of copper, iron, lead, nickel, etc.
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