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What (who) is cobalt - definition
cobalt
-chloride-hexahydrate-sample.jpg?width=200 "Cobalt(II) chloride hexahydrate")
![electrolytically]] refined cobalt (99.9% purity) cut from a large plate](https://commons.wikimedia.org/wiki/Special:FilePath/Kobalt 13g.jpg?width=200 "electrolytically]] refined cobalt (99.9% purity) cut from a large plate")
cobalt(IV).png?width=200 "Structure of tetrakis(1-norbornyl)cobalt(IV)")
![[[Cobalamin]]](https://commons.wikimedia.org/wiki/Special:FilePath/Cobalamin.svg ?width=200 "[[Cobalamin]]")
CHEMICAL ELEMENT WITH SYMBOL CO AND ATOMIC NUMBER 27
Element 27; Cobalt (element); Cobaltic; Cobaltous; Cobolt; Cobalt alloy; Co2+; Co (element); Cobalt mining; Biological roles of cobalt; Industrial applications of cobalt; Coast disease; Ferricobalt; Heart water; Veld sickness; Inapunga; History of cobalt
['k??b?:lt, -?lt]
¦ noun the chemical element of atomic number 27, a hard silvery-white magnetic metal. (Symbol: Co)
Derivatives
cobaltic k?(?)'b?:lt?k, -'b?lt- adjective
cobaltous k?(?)'b?:lt?s, -'b?lt- adjective
Origin
C17: from Ger. Kobalt 'imp, demon' (from the belief that cobalt was harmful to the ores with which it occurred).
Cobalt
CHEMICAL ELEMENT WITH SYMBOL CO AND ATOMIC NUMBER 27
Element 27; Cobalt (element); Cobaltic; Cobaltous; Cobolt; Cobalt alloy; Co2+; Co (element); Cobalt mining; Biological roles of cobalt; Industrial applications of cobalt; Coast disease; Ferricobalt; Heart water; Veld sickness; Inapunga; History of cobalt
·noun A commercial name of a crude arsenic used as fly poison.
II. Cobalt ·noun A tough, lustrous, reddish white metal of the iron group, not easily fusible, and somewhat magnetic. Atomic weight 59.1. Symbol Co.
cobalt
CHEMICAL ELEMENT WITH SYMBOL CO AND ATOMIC NUMBER 27
Element 27; Cobalt (element); Cobaltic; Cobaltous; Cobolt; Cobalt alloy; Co2+; Co (element); Cobalt mining; Biological roles of cobalt; Industrial applications of cobalt; Coast disease; Ferricobalt; Heart water; Veld sickness; Inapunga; History of cobalt
1.
Cobalt is a hard silvery-white metal which is used to harden steel and for producing a blue dye.
...a country rich in copper, cobalt and diamonds.
N-UNCOUNT
2.
Cobalt or cobalt blue is a deep blue colour.
...a woman in a soft cobalt blue dress.
COLOUR
Wikipedia
Cobalt
Cobalt is a chemical element with the symbol Co and atomic number 27. As with nickel, cobalt is found in the Earth's crust only in a chemically combined form, save for small deposits found in alloys of natural meteoric iron.
Examples of use of cobalt
1. It also produces copper, cobalt and platinum–group metals.
2. "This will be a natural reaction," a cobalt trader said.
3. The agreements envisage sales for the next five years of up to 2,500 tons per year of cobalt from Norilsk itself, as well as cobalt hydroxide sourced to the company‘s operations on the Kola Peninsula.
4. One of them has an expanding economy eager for oil, gas, cotton, cobalt and timber.
5. Its earth is laced with the continent‘s largest known mineral deposits; diamonds, gold, cobalt and coltan.