tree ring

American  

noun

1. annual ring.

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tree ring British  

noun

1. another name for annual ring

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Etymology

Origin of tree ring

First recorded in 1915–20

Example Sentences

To explore these questions, Martin Bauch and Ulf Büntgen evaluated earlier research on tree ring growth from eight regions in Europe, measurements of volcanic sulfur preserved in Antarctic and Greenland ice cores, and written reports from the fourteenth century.

From Science Daily

Researchers have discovered evidence in tree ring data from fossilised wood that suggests we could get events perhaps ten times larger than the Carrington event.

From BBC

They will use dendrochronology, also known as tree ring dating, where the rings in the wood are counted to establish the age of a tree.

From BBC

A laboratory measurement method can then be used to determine how much 14C is still contained in a particular tree ring and thus calculate the tree's approximate time of death over the known half-life.

From Science Daily

The researchers compared early instrumental data with a large-scale tree ring dataset and found the 19th century temperature baseline used to contextualise global warming is several tenths of a degree Celsius colder than previously thought.

From Science Daily