eighteenth

Thân thiện

The eighteenth slice of cake is decorated with a single strawberry.

Definition

1. Adjective:

   • Coming next after the seventeenth in position: Used to describe the item in a sequence that follows the seventeenth item.
   • Constituting number eighteen in a series: Relating to the number 18 in order.

2. Noun:

   • Position 18 in a countable series of things: The rank or place of the number eighteen.
   • One of eighteen equal parts of something: A fraction equal to one divided by eighteen (1/18).

Usage Examples

• Adjective:

  • Her eighteenth birthday is a major milestone. (This describes the birthday that is number 18 in the sequence of her birthdays.)
  • We are studying the eighteenth chapter of the book. (This specifies the chapter that comes after the seventeenth.)

• Noun:

  • He finished in eighteenth place in the race. (This refers to the rank or position number 18.)
  • Only an eighteenth of the original population remained. (This uses "eighteenth" to mean one of eighteen equal parts.)

Advanced Usage

• "The eighteenth century": Refers to the years from 1701 to 1800 AD.

  • The Industrial Revolution began in the eighteenth century.

• "Eighteenth hole": In golf, the final hole on a standard course.

  • The tournament was decided at the eighteenth hole.

Variants and Related Words

• Eighteen (cardinal number): The number 18.

  • There are eighteen students in the class.

• Eighteenthly (adverb): Used to introduce an eighteenth point in a list (formal/rare).

  • Eighteenthly, we must consider the long-term economic impact.

Synonyms

• 18th: The ordinal form, used identically to "eighteenth."
• Next after seventeenth: A descriptive synonym for the adjective form.

Related Phrases

• To the eighteenth power (mathematical): Raised to the exponent of 18.
  • The equation involves a variable to the eighteenth power.

Idioms

• Sweet eighteenth: A playful variation of "sweet sixteen," marking an 18th birthday.
  • They threw her a huge party for her sweet eighteenth.

Học thuật

Adjective

1. coming next after the seventeenth in position

Noun

1. position 18 in a countable series of things

Từ đồng nghĩa

• 18th