cobalt

See also: Cobalt

English

Chemical element
Co
Previous: iron (Fe)
Next: nickel (Ni)

Etymology

From German Kobalt, formerly also Kobald, ‑olt, ‑old, ‑elt, ‑el, apparently the same word as Kobold (“goblin”), from Middle High German, which became also a Harz Mountains silver miners’ term for rock laced with arsenic and sulfur, so called because it degraded the ore and made the miners ill. Doublet of kobold.

Pronunciation

• IPA^(key): /ˈkəʊ.bɒlt/, /ˈkəʊ.bɔːlt/
• (US) enPR: kō'bôlt, IPA^(key): /ˈkoʊ.bɔlt/
  • (cot–caught merger) IPA^(key): /ˈkoʊ.bɑlt/

• Audio (US):

  (file)

Noun

cobalt (usually uncountable, plural cobalts)

2. A chemical element (symbol Co) with an atomic number of 27: a hard, lustrous, silver-gray metal.
3. Cobalt blue.

Derived terms

• anticobalt
• cobalamin
• cobalt-60
• cobaltamine
• cobaltammine
• cobaltarthurite
• cobaltate
• cobaltaustinite
• cobalt-bicarbonate method
• cobalt-bloom
• cobalt blue
• cobalt bomb
• cobalt-bronze
• cobalt chelatase
• cobalt cheletase
• cobalt chloride
• cobalt crust
• cobalt dichloride
• cobalt difluoride
• cobalt fluoride
• cobalt-glance
• cobalt green
• cobalti-
• cobaltian
• cobaltic
• cobaltiferous
• cobalt(II) sulfate
• cobaltite
• cobaltkieserite
• cobaltkoritnigite
• cobaltlike
• cobaltlotharmeyerite
• cobalto-
• cobaltoan
• cobaltocene
• cobaltocheletase
• cobaltomenite
• cobaltous
• cobalt oxide
• cobalt-pyrites
• cobalt red
• cobalt-sixty
• cobalt-speiss
• cobalt therapy
• cobalttsumcorite
• cobalt ultramarine
• cobalt violet
• cobalt-vitriol
• cobalt yellow
• cobamide
• cobinamide
• dicobalt
• earthy cobalt
• gray cobalt
• grey cobalt
• luteocobalt
• noncobalt
• organocobalt
• praseocobalt
• purpureocobalt
• radiocobalt
• red cobalt
• samarium-cobalt magnet
• silver-white cobalt
• telecobalt
• tin-white cobalt
• tricobalt

Translations

chemical element

• Afrikaans: kobalt (af)
• Albanian: kobalt (sq)
• Arabic: كُوبَلْت m (kūbalt)
• Armenian: կոբալտ (hy) (kobalt)
• Asturian: cobaltu (ast) m
• Azerbaijani:

  Abjad: قوبالت (qobalt, kobalt), زرنخ داشى (zırnıkh dāshi)

  Roman: kobalt

• Basque: kobaltoa
• Belarusian: ко́бальт m (kóbalʹt)
• Breton: kobalt m
• Bulgarian: коба́лт m (kobált)
• Burmese: ကိုဘော့ (kuibhau.)
• Catalan: cobalt (ca) m
• Chinese:

  Mandarin: 鈷 / 钴 (zh) (gǔ)

• Cornish: cobolt
• Crimean Tatar: kobalt, zırnıq
• Czech: kobalt (cs) m
• Danish: kobolt (da)
• Dutch: kobalt (nl) n
• Esperanto: kobalto (eo)
• Estonian: koobalt (et)
• Faroese: kobolt n
• Finnish: koboltti (fi)
• French: cobalt (fr) m
• Friulian: cobalt
• Galician: cobalto (gl) m
• Georgian: კობალტი (ḳobalṭi)
• German: Kobalt (de) n
• Greek: κοβάλτιο (el) n (kováltio)
• Hebrew: קובלט (he) (qóbalt)
• Hindi: केत्वातु (ketvātu)
• Hungarian: kobalt (hu)
• Icelandic: kóbalt
• Interlingua: cobalt
• Irish: cóbalt (ga)
• Italian: cobalto (it) m
• Japanese: コバルト (ja) (kobaruto)
• Kashubian: kabalt
• Kazakh: кобальт (kk) (kobalt)
• Khmer: កូបាល (koubaal)
• Korean: 코발트 (ko) (kobalteu)
• Kyrgyz: кобальт (kobalt)
• Lao: ໂຄບອລຕ໌ (khō bǭn ta)
• Latvian: kobalts m
• Lingala: kobalti class 9a/10a
• Lithuanian: kobaltas (lt)
• Luxembourgish: Kobalt
• Macedonian: кобалт m (kobalt)
• Malay: kobalt
• Maltese: kobalt
• Manx: cobalt
• Maori: koporata
• Marathi: कोबाल्ट n (kobālṭa)
• Mongolian: кобальт m (kobalʹt)
• Navajo: béésh łibáhí
• Norwegian:

  Bokmål: kobolt (no) m or n

  Nynorsk: kobolt (nn) m

• Occitan: cobalt (oc) m
• Ottoman Turkish: قوبالت (qōbālt), زرنيق طاشى (zırnıq taşı)
• Persian: کبالت (fa) (kobâlt)
• Polish: kobalt (pl) m
• Portuguese: cobalto (pt) m
• Punjabi: ਕੋਬਾਲਟ (pa) (kobālaṭ)
• Romanian: cobalt (ro) n
• Russian: ко́бальт (ru) m (kóbalʹt)
• Scottish Gaelic: còbalt
• Serbo-Croatian:

  Cyrillic: кобалт m

  Roman: kobalt (sh) m

• Slovak: kobalt (sk)
• Slovene: kobalt (sl)
• Spanish: cobalto (es) m
• Swahili: kobalti
• Swedish: kobolt (sv) c (rarely n)
• Tagalog: kobalto
• Tajik: кобалт (kobalt)
• Tamil: மென்வெள்ளி (meṉveḷḷi)
• Thai: โคบอลต์ (koo-bɔ́l)
• Turkish: kobalt (tr)
• Turkmen: kobalt
• Ukrainian: ко́бальт m (kóbalʹt)
• Uyghur: كوبالت (kobalt)
• Uzbek: kobalt (uz)

  Cyrillic: кобальт (uz)

• Vietnamese: coban
• Volapük: kobaltin (vo)
• Welsh: cobalt (cy)
• West Frisian: kobalt
• Yiddish: קאָבאַלט m (kobalt)

See also

• asbolan, asbolite
• erythrite
• glaucodot
• skutterudite
• smaltine

Catalan

Chemical element
Co
Previous: ferro (Fe)
Next: níquel (Ni)

Etymology

Borrowed from German Kobalt.

Pronunciation

• IPA^(key): (Central) [kuˈβal]
• IPA^(key): (Balearic, Valencia) [koˈbalt]

• Audio (Valencia):

  (file)

Noun

cobalt m (uncountable)

1. cobalt

Further reading

• “cobalt” in Diccionari de la llengua catalana, segona edició, Institut d’Estudis Catalans.
• “cobalt”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2025
• “cobalt” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua.
• “cobalt” in Diccionari català-valencià-balear, Antoni Maria Alcover and Francesc de Borja Moll, 1962.

Danish

Alternative forms

• kobolt (official spelling)
• kobalt

Etymology

From German Kobalt.

Noun

cobalt c (singular definite cobalten, not used in plural form)

cobalt n (singular definite cobaltet, not used in plural form)

1. cobalt

Further reading

• “cobalt” in Den Danske Ordbog

French

Etymology

Borrowed from German Kobalt.

Pronunciation

• IPA^(key): /kɔ.balt/

• Audio:

  (file)

Noun

cobalt m (plural cobalts)

1. cobalt

Further reading

• “cobalt”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

Occitan

Etymology

From German Kobalt.

Noun

cobalt m (uncountable)

1. cobalt

Romanian

Chemical element
Co
Previous: fier (Fe)
Next: nichel (Ni)

Etymology

Borrowed from French cobalt or German Kobalt, from German Kobold (“goblin”).

Pronunciation

• IPA^(key): /ˈkobalt/
• Hyphenation: co‧balt

Noun

cobalt n (uncountable)

1. cobalt (chemical element)

Declension

singular only	indefinite	definite
nominative-accusative	cobalt	cobaltul
genitive-dative	cobalt	cobaltului
vocative	cobaltule

References

• cobalt in DEX online—Dicționare ale limbii române (Dictionaries of the Romanian language)

Welsh

Chemical element
Co
Previous: haearn (Fe)
Next: nicel (Ni)

Crisialau a chiwb cromiwm

Etymology

Borrowed from English cobalt, from German Kobold (“goblin”).

Pronunciation

• (North Wales) IPA^(key): /ˈkɔbalt/
• (South Wales) IPA^(key): /ˈkoːbalt/, /ˈkɔbalt/
• Rhymes: -ɔbalt

Noun

cobalt m (uncountable)

1. cobalt

Mutation

Mutated forms of cobalt

radical	soft	nasal	aspirate
cobalt	gobalt	nghobalt	chobalt

Note: Certain mutated forms of some words can never occur in standard Welsh.
All possible mutated forms are displayed for convenience.

Further reading

• R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “cobalt”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies