annual ring
growth ring

As measured by its growth rings, one fallen tree was found to be 347 years old.

It has low, rounded ribs and the annual growth rings can be seen.

The stump is 4 feet wide and has 160 growth rings.

One thing is sure: the 530's were a tough time to be a tree, as the thin growth rings attest.

In the pit was growing a hemlock nearly 400 years old by the number of growth rings.

The thin, white shell is long and narrow with growth rings.

After checking its growth rings, he confirmed that it was 22 years old.

The true age could not be determined because Tambalacoque has no growth rings.

The surface is smooth and often has distinct growth rings.

They grow in the desert and do not have growth rings.