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

See Examples For:

carbon 14

They discovered spikes in carbon 14 that pointed to a sub-extreme solar proton event.

From Science Daily ● May 14, 2026

The team combined medieval historical records with ultra precise carbon 14 measurements taken from buried asunaro trees in northern Japan.

From Science Daily ● May 14, 2026

They found that both carbon 14 and beryllium 10 shot up at the same time.

From Scientific American ● Oct. 19, 2023

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

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