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

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 • Dec. 6, 2025

The average temperature from June through August 2023 was 2.20 degrees Celsius warmer than the average summer temperature between the years 1 and 1890, according to the researchers’ tree ring data.

From New York Times • May 14, 2024

For the majority of climate research, scientists could only measure short-term climate fluctuations from over hundreds of years ago using tree ring records.

From Salon • Jan. 22, 2024

Ulf Büntgen, a geographer at the University of Cambridge, has worked in the Siberian north for decades, gathering tree ring data for paleoclimatic studies in a region still poorly covered by measurements.

From Science Magazine • Nov. 9, 2023

Besides all the rest, rosy linnets and blue lazuli buntings made the old tree ring with their musical roundelays.

From A-Birding on a Bronco by Merriam, Florence A.