lanthanum


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Related to lanthanum: Lanthanum oxide, Lanthanum carbonate

lan·tha·num

 (lăn′thə-nəm)
n. Symbol La
A soft, silvery-white, malleable, ductile element of the lanthanide series, obtained chiefly from the minerals monazite and bastnaesite and used in glass manufacture and with other rare-earth elements in carbon lights for movie and television studio lighting. Atomic number 57; atomic weight 138.91; melting point 920°C; boiling point 3,464°C; specific gravity 6.145 (at 25°C); valence 2, 3. See Periodic Table.

[New Latin, from Greek lanthanein, to escape notice (from the finding of the element hidden in oxide of cerium).]

lanthanum

(ˈlænθənəm)
n
(Elements & Compounds) a silvery-white ductile metallic element of the lanthanide series, occurring principally in bastnaesite and monazite: used in pyrophoric alloys, electronic devices, and in glass manufacture. Symbol: La; atomic no: 57; atomic wt: 138.9055; valency: 3; relative density: 6.145; melting pt: 918°C; boiling pt: 3464°C
[C19: New Latin, from Greek lanthanein to lie unseen]

lan•tha•num

(ˈlæn θə nəm)

n.
a rare-earth, trivalent, metallic element, allied to aluminum, found in certain minerals, as monazite. Symbol: La; at. wt.: 138.91; at. no.: 57; sp. gr.: 6.15 at 20°C.
[< New Latin (1841) < Greek lanthán(ein) to escape notice + New Latin -um, for -ium -ium2]

lan·tha·num

(lăn′thə-nəm)
Symbol La A soft, easily shaped, silvery-white metallic element of the lanthanide series. It is used to make glass for lenses and lights for movie and television studios. Atomic number 57. See Periodic Table.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.lanthanum - a white soft metallic element that tarnishes readilylanthanum - a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
Translations
лантан
lanthan
lanthan
lantano
lantaan
lantaani
לנתן
lantan
lantán
ランタン
lanthanum
lantanas
lantan
lantan
lantânio
lantan
lantan
lantan
lantan
лантан
lantan
References in periodicals archive ?
Significant values were 3850 ppm Cerium, 1890 ppm Lanthanum, 964 Neodymium and 259 Yttrium (see SNET 2014 Press Releases).
Other, 2015 Market Research Report on Global Lanthanum Oxide Industry : For international and China market analysis, the report analyzes Lanthanum Oxide markets in China and other countries or regions (such as US, Europe, Japan, etc) by presenting research on global products of different types and applications, developments and trends of market, technology, competitive landscape, and leading suppliers' and countries' 2009-2014 capacity, production, cost, price, profit, production value, and gross margin.
A high purity (>99%)* lanthanum oxide has been produced at the Solvent Extraction Pilot Plant at ANSTO Minerals.
Lanthanum nitrate was prepared by reacting lanthanum oxide (Inner Mongolia Baotou Rare Earth High Technology Co.
The longer papers consider radio-frequency electrodynamic properties of bulk lanthanum manganites, sinter-alloying and properties of manganese steels, surface treatment effects on bulk material fatigue resistance, developing controllable chemical synthetic routes to elemental selenium and some metal chalcogenides as bulk materials and thin films, and unusual properties of laser-processed strontium ruthenates.
Rado has pioneered the use of number of materials unique to watch making, like hardmetal (tungsten and titanium carbide), ceramics, lanthanum and sapphire crystal.
University, examined the interaction of levothyroxine with two relatively new drugs--colesevelam (Welchol), the newest bile acid sequestrant approved for hyperlipidemia and diabetes; and lanthanum carbonate (Fosrenol), a new phosphate binder used in end-stage renal disease.
Lanthanum is a rare-earth trace metal that naturally occurs in monazite sand and coal (Drueke, 2007).
Fosrenol(R) is a non-aluminium, non calcium phosphate binder that has a very high affinity for dietary phosphate, forming lanthanum phosphate, which passes through the intestines and is eliminated from the body, leading to effective reduction in serum phosphorus levels.
CPFilms' parent company, Solutia, has patents on IR-absorbing layers of lanthanum hexaboride, antimony-tin oxide, and indium-tin oxide.
Mineral products covered by these unlimited quotas, which can be filled by any non-EU exporter include certain rare-earth concentrates; alloys of rare-earths and cerium (containing 47% or more cerium); alloys of rare-earths and lanthanum (containing 43% or more lanthanum; zirconium (IV) basic carbonate); calcined bauxite (refractory grade); quartz plate (or glass plate) covered with chromium film and a photosensitive or electro-sensitive resin; calcium sodium phosphate for animal feed additives; povidone (INN)-iodine; antimony ingots; lithium hypochlorite; lithium tantalate wafers; water suspended colloidal graphite; manganese (II,III) oxide containing 70% plus of manganese; and many more.
Five types of tungsten - pure, ceriated, thoriated, lanthanum and rare earth - are available in 7-in.