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growth ring
noun
: a layer of wood (such as an annual ring) produced during a single period of growth
Examples of growth ring in a Sentence
Recent Examples on the Web
Join 7 others in the comments View Comments In these trees, growth rings that dated back to around 2900 BC were unusually close together, suggesting a poor growing season.
—Mindy Weisberger, CNN, 23 Jan. 2025
After slicing and staining their samples, the researchers then slid them under a microscope to measure their growth rings, as well as their blue rings.
—Sam Walters, Discover Magazine, 22 Jan. 2025
Teeth grow by the acquisition of daily growth rings.
—Laura Baisas, Popular Science, 13 Nov. 2024
To determine at what age the animals had died, researchers used X-ray imaging to count the growth rings on their teeth, like how botanists count the rings of a tree.
—Margherita Bassi, Smithsonian Magazine, 29 July 2024
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Word History
First Known Use
1907, in the meaning defined above
Dictionary Entries Near growth ring
Cite this Entry
“Growth ring.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/growth%20ring. Accessed 30 Jan. 2025.
Kids Definition
growth ring
noun
: a layer of wood (as an annual ring) produced during a single period of growth
More from Merriam-Webster on growth ring
Britannica.com: Encyclopedia article about growth ring
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