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