30

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Definition

  1. Noun:

    • The cardinal number that is the product of ten and three: The natural number following twenty-nine and preceding thirty-one, represented by the symbols 30 or XXX.

  2. Adjective:

    • Being ten more than twenty: Quantifying an amount or position in a sequence equal to three times ten.
Usage Examples

  • Noun:

    • The total number of students in the class is 30.
    • She scored 30 out of 30 on the test.

  • Adjective:

    • He has 30 unread messages in his inbox.
    • The recipe requires 30 grams of sugar.
Advanced Usage

  • "In one's 30s": Referring to the decade of life between the ages of 30 and 39.

    • She started her own company in her 30s.

  • "30 something": Used informally to describe a person or thing that is approximately thirty years old or thirty in number.

    • The new manager is a 30-something professional from the city.
Variants and Related Words

  • Thirtieth (adj., n.): Constituting number thirty in a sequence; the ordinal form corresponding to the cardinal number 30.

    • Today is her thirtieth birthday.
    • He finished in thirtieth place.

  • Thirtyfold (adj., adv.): Thirty times as great or as numerous.

    • The investment saw a thirtyfold increase.
Synonyms
  • Thirty (n., adj.): The word itself is its own primary synonym as a numeral.
  • Three tens (n.): A descriptive synonym indicating the composition.
  • XXX (n.): The Roman numeral representation.
Related Phrases
  • 30-30 (n.): A term often used to denote specific models or calibers, such as the .30-30 Winchester rifle cartridge.
  • 30 Rock (n.): The common name for the GE Building at 30 Rockefeller Plaza in New York City.
Idioms and Cultural References
  • "30 for 30": The title of a series of documentary films by ESPN, each telling a significant sports story.
  • "30 pieces of silver": An idiom originating from the Bible (Matthew 26:15), symbolizing a betrayal for a meager reward, referring to the sum paid to Judas Iscariot.
  • "-30-": A traditional notation used in journalism and telegraphy to indicate the end of a story or message.
Adjective
  1. being ten more than twenty
Noun
  1. the cardinal number that is the product of ten and three

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