tree ring
tree ring — noun
1. one of the circular layers of wood inside a tree's trunk, where a fresh layer is
one of the circular layers of wood inside a tree's trunk, where a fresh layer is added every year, so counting the rings reveals the tree's age
The forester counted the tree rings to learn how old the oak was.
count the tree rings to find a tree's age
Each summer of heavy rain leaves a wider tree ring in the wood.
a wider tree ring marks a wet growing year
Heloísa photographed the pale tree rings on the freshly cut pine stump.
Scientists study tree rings to track droughts from hundreds of years ago.
After the storm fell the maple, Kofi traced its tree rings with one finger.
- annual ring
more technical botanical term for the same yearly band
- growth ring
broader term; also covers similar rings in shells and horns
用法筆記
Usually plural (tree rings) when the point is counting them to date a tree or read past weather; the singular names just one band of growth.