carbon 14

American  

Also carbon-14

noun

1. radiocarbon.

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carbon 14 Scientific  

1. A naturally occurring radioactive isotope of carbon having six protons and eight neutrons in the nucleus. Carbon 14 is important in dating archaeological and biological remains by radiocarbon dating.

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carbon 14 Cultural  

1. A radioactive isotope of carbon. A carbon 14 atom contains six protons, six electrons, and eight neutrons. Carbon 14 is produced when neutrons bombard atoms of nitrogen.

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Discover More

Carbon 14 is used in a common form of radioactive dating to determine the age of ancient objects.

Etymology

Origin of carbon 14

First recorded in 1935–40

Compare meaning

How does carbon-14 compare to similar and commonly confused words? Explore the most common comparisons:

• carbon 12 vs. carbon 14

Example Sentences

Trees found worldwide record an uptick in carbon 14 around that time, and wood found at L’Anse aux Meadows should be no exception.

From Seattle Times • Oct. 21, 2021

The researchers followed up with tree rings and saw a corresponding spike of carbon 14.

From Scientific American • Sep. 13, 2021

The carbon dating, done by a lab in Florida, found that the logs Yunker uncovered were living trees in the 1950s because they contained extra carbon 14, released during thermo-nuclear bomb testing in that era.

From Washington Times • Oct. 18, 2015

Once it is part of the battle rhythm, it has the persistence of carbon 14.

From Salon • Aug. 27, 2010

Today, nearly 40 years after those early dates for pottery in Japan were measured, archaeologists are still reeling from the carbon 14 shock, as it is termed.

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond