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thirty-first

American  
[thur-tee-furst] / ˈθɜr tiˈfɜrst /

adjective

  1. next after the thirtieth; being the ordinal number for 31.

  2. being one of 31 equal parts.


noun

  1. a thirty-first part, especially of one (1/31).

  2. the thirty-first member of a series.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Finland's application was processed in record time and it became the thirty-first member of the alliance earlier this month.

From Reuters • Apr. 19, 2023

Thus, every time you play “Disc 2: High Rise” you start on the thirty-first floor of a building and must make you way down.

From Washington Post • Mar. 14, 2019

But on the night of the thirty-first, when the stagehands asked for Gelb’s “last and best” offer, it became clear that each side had badly misjudged the other.

From The New Yorker • Mar. 16, 2015

Anonymous doesn’t need to do anything on March thirty-first.

From Forbes • Feb. 16, 2012

The United States finished between fifteenth and thirty-first in the three categories tested by the Organisation for Economic Co-operation and Development.

From "Drama High" by Michael Sokolove

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