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Wiktionary
twenty-first

a. The ordinal number form of the number twenty-one. n. 1 The person or thing in the twenty-first position. 2 One of twenty-one equal parts of a whole, usually written textstylefrac{1}{21}. 3 (context informal English) A party to celebrate a twenty-first birthday.

WordNet
twenty-first

adj. coming next after the twentieth in position [syn: 21st]

Usage examples of "twenty-first".

And there was no sight in twenty-first century Africa like the two ankylosaurs who now began to mate, backing their rear ends together with the most exquisite care.

God knew how many mysteries of Christendom a thousand years ago, kept alive on the looms of the twenty-first century because they went so well with the compound arches and rib-rife vaulted ceilings, the random Chaucerian casement windowpane etchings of ancient Gothic buildings erected en masse in the 1920s.

Well, the way it works here is that the coinsurance comes in on the twenty-first day, after twenty days, and Medicare covers everything through day one hundred above ninety-five dollars and fifty cents a day, which is what you have to cover.

Eighteen years later to the day, the day after my twenty-first birthday, he gave me my first dose of lysergic acid diethylamide under controlled conditions.

A major incident had occurred when rebels took over the ISA launch base at Cape Lopez on the Gabon coast, built there as a symbolic gesture to indicate the place of the new Africa in the world of the twenty-first century.

Felix Zubian and Gats Hackett entered the Grandville Building, and rode to the twenty-first floor.

As her connection with the twentieth and twenty-first centuriesnot to mention reality in generalis somewhat tenuous, she had no other choice but to become a writer of fantastic fiction.

In the twenty-first century, when I hope Russia will be a sweeter country than it is just now, Gorki will be but a name in a textbook, but Chekhov will live as long as there are birchwoods and sunsets and the urge to write.

But, even in the twenty-first century, Tariq iba Zachir accepted that it was his duty to maintain a conservative lifestyle.

To the organic side belong Macchiavelli, Vico, Montaigne, Leibnitz, Lichtenberg, Pascal, Hobbes, Goethe, Hegel, Carlyle, Nietzsche and Spengler, the philosopher of the twentieth and twenty-first centuries.

For an analysis of the contemporary dynamics of social and productive cooperation, see Antonio Negri, The Politics of Subversion: A Manifesto for the Twenty-first Century, trans.

Mick wanted nothing less than to change history, to move the Nietzschean philosophy into the twenty-first century: the complete control of the commerce of business and thought.

Hayes soon saw what passes, at the dawn of the twenty-first century, for a topflight journalism education in this country.

Zefram Cochrane in the twenty-first century and we saw Earth in a very distraught state.

Somewhere in Swift Park was a monument displaying a replica of the first Deimos lander, a Russian craft of the early twenty-first Christian century.