21ST

 Dictionary entry overview: What does 21st mean? 

• 21ST (adjective)
  The adjective 21ST has 1 sense:

1. coming next after the twentieth in position

  Familiarity information: 21ST used as an adjective is very rare.

 Dictionary entry details 

• 21ST (adjective)

Sense 1

Meaning:

Coming next after the twentieth in position

Synonyms:

21st; twenty-first

Similar:

ordinal (being or denoting a numerical order in a series)

 Context examples 

At that time, it experienced the brightest outburst from an X-ray binary seen in the 21st century.

(NuSTAR Probes Black Hole Jet Mystery, NASA)

Many Pacific Island countries and territories will lose 50-80 per cent of marine species by the end of the 21st century if climate change and global warming continue unchecked, reports a new study.

(Pacific island fish migrating to cooler seas, SciDev.Net)

Citing statistics from the Intergovernmental Panel on Climate Change (IPCC), the earth is on course to see 20 to 40 per cent of all biodiversity wiped out by the end of the 21st century.

(Nearly Half the Planet's Species Could Be Wiped Out by the End of This Century, The Titi Tudorancea Bulletin)

On the 21st of April, 1708, we sailed into the river of Clumegnig, which is a seaport town, at the south-east point of Luggnagg.

(Gulliver's Travels into several remote nations of the world, by Jonathan Swift)

A program to spur development of daring technologic improvements in cancer treatment and detection in the 21st century.

(NCI Unconventional Innovations Program, NCI Thesaurus)

This will result in a more holistic understanding of what drives biodiversity and how it may respond to ongoing and future human-caused changes in the 21st century.

(Connecting the prehistoric past to the global future, National Science Foundation)

He said a shaft in the tomb contained mummies belonging to ancient Egyptian people who lived during the 21st and 22nd dynasties.

(Egypt Announces Discovery of 3,500-Year-Old Luxor Tomb, The Titi Tudorancea Bulletin)

The manufacture of virgin plastic so far in the 21st century is equivalent to the volume produced in the previous 50 years.

(Scientists develop biodegradable plastic from cassava starch, SciDev.Net)

Climate change is one of the biggest global threats to human health of the 21st century, and its peril to society will be increasingly connected to weather-driven hazards, said Giovanni Forzieri of the European Commission Joint Research Center in Italy, who co-led the study.

(Study: Climate Change Will Bring 50-Fold Rise in Europe Weather-related Deaths, VOA News)

Climate change will increase the size of stalled high-pressure weather systems called blocking events, which have already produced some of the 21st century's deadliest heat waves, according to a study by Rice University researchers.

(Stalled weather patterns will get bigger due to climate change, National Science Foundation)