growth ring

noun — 2 senses

growth ring

noun
1

A circular structure that forms as a living thing ages that is used or counted to estimate the age of the living thing.

2

Any of the concentric rings formed in the trunk of a tree by the annual growth of wood.

Related terms
dendrochronology

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.