cardinal

/'kɑ:dinl/
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cardinal

A cardinal sits on a branch in the backyard.

Definition

  1. Adjective:

    • Fundamental, of primary importance: Describes something that is most important, essential, or central.
    • Relating to number quantity: Denoting a simple numerical quantity (e.g., one, two, three) without indicating order or position.

  2. Noun:

    • A high-ranking bishop in the Roman Catholic Church: A member of the Sacred College who advises the Pope and participates in electing a new Pope.
    • A North American songbird: A crested finch, the male of which has bright red plumage.
    • A vivid red color: A color resembling the red plumage of the bird.
    • A number denoting quantity: In mathematics, the number of elements in a set.
Usage Examples

  • Adjective:

    • Honesty is a cardinal virtue in many cultures.
    • "One," "two," and "three" are cardinal numbers.

  • Noun:

    • The Pope appointed a new cardinal from Latin America.
    • A bright red cardinal was perched on the fence.
    • She painted the door in a rich cardinal red.
    • The cardinal of the set {a, b, c} is three.
Advanced Usage

  • "Cardinal sin": A very serious or fundamental error, often used figuratively outside of religious contexts.

    • Forgetting the client's name was a cardinal sin in public relations.

  • "Cardinal point": One of the four main directions of the compass (north, south, east, west).

    • The ancient navigators learned to identify the cardinal points by the stars.
Variants and Related Words

  • Cardinalate / Cardinalcy (n): The office, rank, or term of office of a cardinal.

    • He was elevated to the cardinalate last year.

  • Cardinally (adv): In a fundamental or essential manner.

    • The two theories differ cardinally in their basic assumptions.
Synonyms
  • Adjective (fundamental): Essential, primary, principal, key, paramount.
  • Adjective (numerical): Quantitative.
  • Noun (bird): Cardinal grosbeak, redbird.
  • Noun (color): Crimson, scarlet.
Related Phrases

  • Cardinal rule: A fundamental or most important rule.

    • The cardinal rule of hiking is to tell someone where you are going.

  • Cardinal virtue: One of the primary moral virtues (often identified as prudence, justice, temperance, and fortitude).

    • Justice is considered a cardinal virtue.
Idioms
  • Cardinal and ordinal: A phrase used together to distinguish between numbers that indicate quantity (cardinal: one, two) and numbers that indicate order or position (ordinal: first, second).
    • When learning numbers, students must understand the difference between cardinal and ordinal numbers.
cardinal

A cardinal sits on a branch in the backyard.

Adjective
  1. being or denoting a numerical quantity but not order
    • cardinal numbers
  2. serving as an essential component
    • a cardinal rule
    • the central cause of the problem
    • an example that was fundamental to the argument
    • computers are fundamental to modern industrial structure
Noun
  1. crested thick-billed North American finch having bright red plumage in the male
  2. a variable color averaging a vivid red
  3. the number of elements in a mathematical set; denotes a quantity but not the order
  4. (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

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