Definition, Meaning & Synonyms

cardinal

adjective
/ˈkärd(ə)nəl/
Definition
A cardinal number is a number that expresses quantity.
Examples
  • The cardinal rule of kindness is to treat others as you wish to be treated.
  • In mathematics, one must understand cardinal numbers to count objects correctly.
  • The cardinal directions of north, south, east, and west help in navigation.
Meaning
In a general sense, the term ‘cardinal’ relates to something of primary importance or fundamental value.
Synonyms
  • Primary
  • Fundamental
  • Essential
  • Main
  • Central