lutetium (redirected from Cassiopeium)

lu·te·ti·um also lu·te·ci·um  (l-tsh-m)

n. Symbol Lu

A silvery-white rare-earth element that is exceptionally difficult to separate from the other rare-earth elements, used in nuclear technology. Atomic number 71; atomic weight 174.97; melting point 1,663°C; boiling point 3,395°C; specific gravity 9.840 (at 25°C); valence 3. See Table at element.

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[Latin Lutetia, ancient name of Paris, France (where it was discovered) + -ium.]

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lutetium, lutecium [lʊˈtiːʃɪəm]

n

(Chemistry / Elements & Compounds) a silvery-white metallic element of the lanthanide series, occurring in monazite and used as a catalyst in cracking, alkylation, and polymerization. Symbol: Lu; atomic no.: 71; atomic wt.: 174.967; valency: 3; relative density: 9.841; melting pt.: 1663°C; boiling pt.: 3402°C

[New Latin, from Latin Lūtētia ancient name of Paris, home of G. Urbain (1872-1938), French chemist, who discovered it]

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lutetium  (l-tsh-m)

Symbol Lu

A silvery-white metallic element of the lanthanide series that is used in nuclear technology. Its radioactive isotope is used in determining the age of meteorites. Atomic number 71; atomic weight 174.97; melting point 1,663°C; boiling point 3,395°C; specific gravity 9.840 (at 25°C); valence 3. See Periodic Table.

Thesaurus

Noun

1.

lutetium - a trivalent metallic element of the rare earth group; usually occurs in association with yttrium atomic number 71, Lu, lutecium 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

lutetium [lʊˈtiːʃɪəm] N → lutecio m

lutetium

n (Chem) → Lutetium nt