Definition of cardinal

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  • cardinal is a valid Scrabble US word with a point value of 11
  • cardinal is a valid Scrabble UK word with a point value of 11
  • cardinal is a valid Words with friends word with a point value of 14

Definition of cardinal

  • crested thick-billed North American finch having bright red plumage in the male (noun)

    Synonyms

    1. cardinal grosbeak
    2. cardinalis cardinalis
    3. redbird
    4. richmondena cardinalis
  • the number of elements in a mathematical set; denotes a quantity but not the order (noun)

    Synonyms

    1. cardinal number
  • a variable color averaging a vivid red (noun)

    Synonyms

    1. carmine
  • serving as an essential component (adjective)

    Examples

    1. a cardinal rule

    Synonyms

    1. central
    2. fundamental
    3. key
    4. primal
  • being or denoting a numerical quantity but not order (adjective)

    Examples

    1. cardinal numbers
  • (Roman Catholic Church) one of a group of more than 100 prominent bishops in the Sacred College who advise the Pope and elect new Popes (noun)

See definition of cardinal in Merriam Webster