English Explanatory Dictionary

cobalt

English dictionary entry

Meanings

noun
  1. A chemical element (symbol Co) with an atomic number of 27: a hard, lustrous, silver-gray metal.
  2. Cobalt blue.
name
  1. A village in Connecticut.
  2. A town in Ontario.
  3. An unincorporated community in Idaho.

Pronunciation

/ˈkəʊ.bɒlt/ /ˈkəʊ.bɔːlt/ kō'bôlt /ˈkoʊ.bɔlt/ /ˈkoʊ.bɑlt/ LL-Q1860 (eng)-Naomi Persephone Amethyst (NaomiAmethyst)-cobalt.wav En-us-cobalt.ogg

Word forms

cobalt cobalts

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.

Related words

asbolan asbolite erythrite glaucodot skutterudite smaltine

Derived words

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
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