tree ring
A layer of wood formed during a growth period, often one year, visible as a ring in a cut trunk.
Annual growth rings in a ponderosa pine stem cross-section (Pinus ponderosa)
All languages
- English
- tree ring
- Norwegian
- årring
- Japanese
- 年輪 — ねんりん — nenrin
- Korean
- 나이테 — naite
- Spanish
- anillo de crecimiento
- French
- cerne de croissance
- German
- Jahresring
Illustrations are AI-generated and translations are undergoing language review.
Reference sources
- US Forest Products Laboratory Wood Handbook — ponderosa-pine cross-sections show light earlywood and dark latewood; both make one annual ring
- US Forest Service — tree rings are annual growth layers seen in cross-section
- Iowa State University Extension — one annual growth ring contains a light earlywood band and a darker latewood band