Definition

1. Adjective:
   • Coming next after the sixty-ninth in a series; being the ordinal number for seventy: "70th" is used to indicate position or order in a sequence, specifically the position corresponding to the number seventy.

Usage

• The word "70th" is used attributively before a noun to specify its place in an ordered sequence.
• It is commonly written with the numeral ("70th") in dates and technical lists, but can be spelled out ("seventieth") in prose.
• It functions identically to other ordinal numbers (e.g., 1st, 2nd, 3rd).

Examples

• Adjective:
  • They celebrated their 70th wedding anniversary.
  • She finished in 70th place in the marathon.
  • The seventieth day of the year.

Advanced Usage

• As a nominal adjective (functioning as a noun): Can be used to represent the person or item in that position.
  • He was the 70th to cross the finish line.
• In fractions: The ordinal form is used for the denominator in fractions (e.g., one-seventieth, 1/70th).
  • A seventieth of the total revenue.

Variants and Related Words

• Seventieth: The standard written form of the ordinal number.
• 70th: The common numerical abbreviation.
• Seventy: The cardinal number.

Synonyms

• Seventieth: The direct synonym and spelled-out form.

Related Phrases and Idioms

• 70th birthday/anniversary: A common collocation marking a milestone.
• The seventieth percentile: A statistical term.

Adjective

1. the ordinal number of seventy in counting order