cobalt
/kə'bɔ:lt/
Definition
- Noun:
- A chemical element: Cobalt is a hard, silver-white metallic element that is ferromagnetic (can be magnetized). It is typically bivalent or trivalent in its compounds and is an essential trace element in the nutrition of both plants and animals.
Usage and Examples
- Noun:
- Cobalt is used in the production of high-strength alloys and magnets.
- The blue color in some glass and ceramics comes from cobalt compounds.
- A deficiency of cobalt in the soil can affect animal health.
Advanced Usage
- "Cobalt blue": A specific, deep blue pigment or color derived from cobalt compounds.
- The artist used a vibrant cobalt blue for the sky in the painting.
Variants and Related Words
- Cobaltic (adj): Relating to or containing cobalt, especially with a valence of three.
- Cobaltous (adj): Relating to or containing cobalt, especially with a valence of two.
Synonyms
- Element Co: Referring to cobalt by its chemical symbol (Co).
- Trace metal: A general term for metallic elements required in minute amounts for nutrition, which includes cobalt.
Related Phrases and Compounds
- Cobalt bomb: A theoretical type of nuclear weapon designed to produce enhanced radioactive fallout.
- Cobalt therapy: A historical form of radiation therapy for cancer using radioactive cobalt-60.
Noun
-
a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition
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