- next after the twentieth; being the ordinal number for 21.
- being one of 21 equal parts.
- a twenty-first part, especially of one (1/21).
- the twenty-first member of a series.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for twenty-first
Even the legendary 1980s televisions show Dallas is back on the air, selling its twenty-first century brand of Texas bravado.Will Texas Stay Texan?
December 29, 2014
Except in the twenty-first, the consequences may be more dire.We're Still Fighting the Opium Wars
August 28, 2014
Technology that stealthily decimates in the blink of an eye, that is what is what Israel needs in the Twenty-First Century.Israel Needs Better War Technology
July 7, 2014
A bar open at three in the afternoon makes you want to organize a parade for the Twenty-first Amendment.Surviving War Doesn’t Turn All Veterans into Victims, Sometimes it Helps Them Grow
May 18, 2014
Capital in the Twenty-First Century By Thomas Piketty ‘Capital in the Twenty-First Century’ by Thomas Piketty.This Week’s Hot Reads: April 21, 2014
April 22, 2014
But this is rambling far from the momentous twenty-first of June, my day of triumph.The Fortune Hunter
Louis Joseph Vance
I was about to pursue the statement that on my twenty-first birthday I gave a party, and She was there.The Uncommercial Traveller
I have telegraphed the Heptons that we will join them in Paris on the evening of the twenty-first.
We took the two-twenty train from Charing Cross on the afternoon of the twenty-first.
What better is my twenty-first 105 birthday than any other day?An Orkney Maid
Amelia Edith Huddleston Barr