twenty-first

American  

[twen-tee-furst, twuhn-] / ˈtwɛn tiˈfɜrst, ˈtwʌn- /

adjective

1. next after the twentieth; being the ordinal number for 21.

2. being one of 21 equal parts.

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noun

1. a twenty-first part, especially of one (1/21).

2. the twenty-first member of a series.

Example Sentences

Your brother is banished to the dark ages of the twenty-first century?

From Literature

Which brings us to "Look Up," his twenty-first studio album and easily his finest record in decades.

From Salon

At half past six on the twenty-first of June 1922, when Count Alexander Ilyich Rostov was escorted through the gates of the Kremlin onto Red Square, it was glorious and cool.

From Los Angeles Times

"We find that rapid ocean warming, at approximately triple the historical rate, is likely committed over the twenty-first century, with widespread increases in ice-shelf melting, including in regions crucial for ice-sheet stability," the authors write.

From Salon

Unimpressed by the books she found in her search for answers, MacPhail, a medical anthropologist, began writing Allergic as a “personal and scientific journey to diagnose the problem of allergy in the twenty-first century.”

From Scientific American