thirtieth

/'θə:tiiθ/

Thân thiện

She is celebrating her thirtieth birthday with a small cake.

Definition

1. Adjective:

   • Coming next after the twenty-ninth in position: Used to describe the ordinal number corresponding to the number 30 in a sequence.
   • Constituting number thirty in a series: Pertaining to one of thirty equal parts.

2. Noun:

   • Position 30 in a countable series of things: The rank or place of number thirty.
   • One of thirty equal parts of something: A fraction equal to one divided by thirty (1/30).

Usage Examples

• Adjective:
  • This is my thirtieth visit to the museum. (This indicates the visit number 30 in a sequence.)
  • Her thirtieth birthday was a grand celebration. (This describes the birthday that marks 30 years of age.)
• Noun:
  • He finished in thirtieth place in the race. (This refers to rank number 30.)
  • She inherited a thirtieth of the estate. (This means one part out of thirty equal parts.)

Advanced Usage

• "The thirtieth of the month": A common phrase to specify a date.
  • The payment is due on the thirtieth of April.
• "Thirtieth anniversary": Denoting the 30-year milestone of an event.
  • They celebrated their thirtieth wedding anniversary.

Variants and Related Words

• Thirty (noun, adjective): The cardinal number 30.
  • There are thirty days in April.
• Thirtiethly (adverb, rare): In the thirtieth place (used in enumerations).
  • Thirtiethly, we must consider the long-term impact.

Synonyms

• 30th (adj, n): The numeric symbol for thirtieth.
• Trigesimal (adj, formal/rare): A technical term meaning thirtieth or relating to thirty.

Related Phrases

• In one's thirtieth year: During the year a person is age 30.
  • He wrote his first novel in his thirtieth year.

Học thuật

Adjective

1. coming next after the twenty-ninth in position

Noun

1. position 30 in a countable series of things

Từ đồng nghĩa

• 30th