lanthanum
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Lanthanum — (pronEng|ˈlænθənəm) is a chemical element with the symbol La and atomic number 57. Characteristics Lanthanum is a silvery white metallic element that belongs to group 3 of the periodic table and is a lanthanoid. Found in some rare earth minerals … Wikipedia
lanthanum — Symbol: La Atomic number: 57 Atomic weight: 138.9055 (From the Greek word lanthanein, to line hidden) Silvery metallic element belonging to group 3 of the periodic table and oft considered to be one of the lanthanoids. Found in some rare earth… … Elements of periodic system
lanthanum — [lan′thənəm] n. [ModL: so named (1839) by G. Mosander (see ERBIUM) < lanthana, lanthanum oxide, lit., the hidden one < Gr lanthanein, to be hidden (see LATENT): it had previously been undetected in the mineral cerite] a soft, malleable,… … English World dictionary
Lanthanum — Lan tha*num (l[a^]n th[.a]*n[u^]m), n. [NL., fr. Gr. lanqa nein to lie hid, to be concealed.] (Chem.) A rare element of the rare earth group of the metals, of atomic number 57, allied to aluminum. It occurs in certain rare minerals, as cerite,… … The Collaborative International Dictionary of English
lanthanum — salts are used as a negative stain in electron microscopy, and as calcium channel blockers … Dictionary of molecular biology
lanthanum — metallic rare earth element, 1841, coined in Modern Latin by Swedish chemist and mineralogist Carl Gustav Mosander (1797 1858), who discovered it in 1839, from Gk. lanthanein to lie hidden, escape notice, from PIE root *ladh to be hidden (see… … Etymology dictionary
lanthanum — /lan theuh neuhm/, n. Chem. 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. [ < NL (1841), equiv. to lanthan ( < Gk lanthánein … Universalium
lanthanum — lantanas statusas T sritis chemija apibrėžtis Cheminis elementas. simbolis( iai) La atitikmenys: lot. lanthanum angl. lanthanum rus. лантан … Chemijos terminų aiškinamasis žodynas
lanthanum — noun [lɑ˧nˈðaː˨nɔ˧m] a) A metallic chemical element (symbol La) with an atomic number of 57. b) lanthanum See Also: lanthana, lanthanate, lanthanide, lanthanite, lanthanoid, lanthanon … Wiktionary
lanthanum — lantanas statusas T sritis fizika atitikmenys: angl. lanthanum vok. Lanthan, n rus. лантан, m pranc. lanthane, m … Fizikos terminų žodynas
Lanthanum strontium cobalt ferrite — (LSCF), also called lanthanum strontium cobaltite ferrite is a ceramic material of the ferrite group. It is a mixture of lanthanum(III) oxide, strontium oxide, cobalt oxide and iron oxide (cobalt iron oxide).It is black in color and crystallizes… … Wikipedia
