tantalum

en-noun

tantalum (countable and uncountable, plural tantalums)

A New Latin word derived by Swedish chemist Anders Gustaf Ekeberg in 1802, from Latin Tantalus, named after Tantalus, alluding to the element's incapacity to absorb acid. See -ium.

A chemical element (symbol Ta) with atomic number 73: a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant.


tantalum

la-noun

tantalum n (genitive tantalī); second declension

tantalī (genitive)
tantalum (nominative singular)
tantala (nominative plural)
tantalī (genitive singular)
tantalōrum (genitive plural)
tantalō (dative singular)
tantalīs (dative plural)
tantalum (accusative singular)
tantala (accusative plural)
tantalō (ablative singular)
tantalīs (ablative plural)
tantalum (singular vocative)
tantala (plural vocative)

[ˈt̪än̪t̪äɫ̪ʊ̃ˑ]


tantalate

LL-Q1860 (eng)-Flame, not lame-tantalate.wav


tantalic acid

(chemistry) the hydrated form of tantalum oxide, Ta₂O₅


tantalous

(chemistry) Containing tantalum in a higher proportion than tantalic compounds.


tantalic

(chemistry) Containing pentavalent tantalum.


tantalite

(mineralogy) A dark-brown mineral that is an ore of tantalum and niobium, of the chemical formula (Fe, Mn) Ta₂O₆.


lithium tantalate

(chemistry) the lithium salt of tantalic acid, LiTaO₃, whose crystalline form is piezoelectric and pyroelectric and is used in optical devices


columbite

(mineralogy) A black mineral that is a mixed iron and manganese niobate and tantalate, and is the main ore of niobium and tantalum.


тантал

uk-noun

танта́л • (tantál) m inan (genitive танта́лу, uncountable, relational adjective танта́ловий)

танта́л (canonical)
tantál (romanization)
танта́лу (genitive)
танта́ловий (adjective relational)
танта́л (nominative singular)
танта́лу (genitive singular)
танта́лові (dative singular)
танта́лу (dative singular)
танта́л (accusative singular)
танта́лом (instrumental singular)
танта́лу (locative singular)
танта́лі (locative singular)
танта́ле (singular vocative)


tantan

Ultimately from New Latin tantalum, with the suffix -um removed as with most chemical elements.


zimbabweite

Zimbabwe, where it was discovered, and -ite.

(mineralogy) A yellow-brown mineral with chemical formula (Na,K)₂PbAs₄(Nb,Ta,Ti)₄O₁₈, generally classed as an arsenite.


coltan

Coltan is used for the production of tantalum capacitors.

[…] as of 2003 over one billion cell phones were in use worldwide, so by the time the high-tech bubble approached its bursting point in 2000 and 2001, coltan had become an extremely hot commodity.

2007, Elizabeth Grossman, High Tech Trash, Island Press, →ISBN, page 46:

Consider your mobile phone. Before it was assembled in a Chinese factory, the coltan in its capacitors may have been dug by miners in the Eastern Congo, where millions have died in a series of wars over ‘conflict minerals’, though we give this no more thought than previous generations of Westerners gave to the Congolese origins of the ivory in their piano keys, the rubber in their tyres, the copper in their bullet casings or the uranium in their bombs.

2014, Adam Schatz, ‘Ça va un peu’, London Review of Books, volume 36, number 20:

(mineralogy) A metallic ore, (Fe,Mn)(Ta,Nb)₂O₆, from which the elements niobium and tantalum are extracted.


betafite

en-noun

betafite (countable and uncountable, plural betafites)

From Betafo + -ite, after Betafo in the Malagasy Republic, where it was discovered.

(mineralogy) A radioactive mineral in the pyrochlore group, having chemical formula (Ca,U)₂(Ti,Nb,Ta)₂O₆(OH).


tantaliferous

en-adj

tantaliferous (comparative more tantaliferous, superlative most tantaliferous)

more tantaliferous (comparative)
most tantaliferous (superlative)


pelopium

(obsolete) A supposed chemical element, later found to be a mixture of niobium and tantalum.


tantalian

tantalian (comparative more tantalian, superlative most tantalian)

more tantalian (comparative)
most tantalian (superlative)


yttrotantalite

en-noun

yttrotantalite (usually uncountable, plural yttrotantalites)

(mineralogy) A brown or black tantalate of uranium, yttrium, and calcium.


vigezzite

(mineralogy) An orthorhombic-dipyramidal mineral containing calcium, cerium, niobium, oxygen, tantalum, and titanium.


niobocarbide

(mineralogy) An isometric-hexoctahedral mineral containing carbon, niobium, and tantalum.


schiavinatoite

(mineralogy) A tetragonal-ditetragonal dipyramidal grayish pink mineral containing boron, niobium, oxygen, and tantalum.


simpsonite

(mineralogy) A trigonal-pyramidal mineral containing aluminum, hydrogen, niobium, oxygen, and tantalum.


rynersonite

(mineralogy) An orthorhombic-dipyramidal mineral containing calcium, niobium, oxygen, and tantalum.


tantalocene

(organic chemistry) A metallocene containing a tantalum atom.


ditantalum

(chemistry, especially in combination) Two tantalum atoms in a molecule.


tritantalum

(chemistry, in combination) Three tantalum atoms or cations in a molecule (Ta₃)