Definition

1. Noun:
   • Cobalt: A hard, ferromagnetic, silver-white metallic element. It is bivalent or trivalent and is a trace element essential for nutrition in plants and animals. Its symbol is Co.

Usage

• Atomic number 27 is the formal, scientific term for the element cobalt. It is used primarily in technical, chemical, and academic contexts to specify the element by its number of protons.
• Example: "The alloy's magnetic properties are enhanced by the inclusion of atomic number 27."

Examples

• Noun:
  • The periodic table lists cobalt as atomic number 27.
  • A deficiency of atomic number 27 can affect livestock health.

Advanced Usage

• In materials science and chemistry, the term is used for precise classification and to avoid ambiguity in formulas or discussions about elemental properties.
  • The catalyst contained a compound of atomic number 27 and manganese.

Variants and Related Words

• Cobalt (n): The common name for the element with atomic number 27.
  • The vase was painted with a brilliant cobalt blue glaze.
• Co (n): The chemical symbol for cobalt/atomic number 27.
  • The formula for the compound is written as Co₃O₄.

Synonyms

• Cobalt: The direct and most common synonym.
• Element 27: An alternative scientific designation.

Related Phrases / Terms

• Trace element: A category that includes atomic number 27, as it is required in minute amounts for biological function.
• Ferromagnetic metal: A key property of atomic number 27 (cobalt).

Noun

1. a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition