51

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Definition
  1. Adjective:
    • Being one more than fifty: The cardinal number that follows fifty and precedes fifty-two; the numerical value represented by the Arabic numerals 51 or the Roman numeral LI.
Usage
  • The word "51" functions primarily as a numeral adjective. It is used to specify a quantity or position in a sequence that is exactly one unit greater than fifty.
  • It modifies a noun to indicate a precise count or order.
Examples
  • Adjective:
    • There are 51 states in the United States. (This is a factual statement using the number to modify "states".)
    • She finished in 51st place in the marathon. (Here, "51st" is the ordinal form derived from the cardinal number "51".)
    • The recipe calls for 51 grams of sugar. (The numeral specifies an exact quantity.)
Advanced Usage
  • As a nominal (noun): While primarily an adjective, the numeral can stand alone as a noun to represent the number itself.
    • Fifty-one is a prime number. (Here, "fifty-one" is the subject of the sentence, functioning as a noun phrase.)
  • In compound adjectives: It can be part of a hyphenated compound adjective.
    • It was a 51-page document. (The numeral is part of the compound adjective "51-page" which modifies "document".)
Variants and Related Words
  • Fifty-one: The word form of the numeral.
  • 51st (fifty-first): The ordinal number form, used to indicate position in a sequence.
  • LI: The Roman numeral representation.
Synonyms
  • Fifty-plus-one: A descriptive synonym indicating the same value.
  • L plus I: Referring to its Roman numeral equivalent (L=50, I=1).
Related Phrases and Idioms
  • 51 percent: Often used in contexts like ownership or majority control, meaning a controlling share (just over half).
    • He acquired a 51 percent stake in the company.
  • Route 51: Commonly used in the names of highways or roads (e.g., U.S. Route 51).
  • Area 51: A famous (and highly classified) United States Air Force facility, the name of which has become an idiom for government secrecy or alleged extraterrestrial activity.
    • The conspiracy theory is often linked to Area 51.
Adjective
  1. being one more than fifty

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