annual ring

American  

noun

1. an annual formation of wood in plants, consisting of two concentric layers, one of springwood and one of summerwood.

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annual ring British  

noun

1. Also called: tree ring.  a ring of wood indicating one year's growth, seen in the transverse section of stems and roots of woody plants growing in temperate climates

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annual ring Scientific  

1. See under growth ring

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Etymology

Origin of annual ring

First recorded in 1875–80

Example Sentences

See Examples For:

annual ring

“The tree-ring patterns in the cross-sections were visually inspected,” the research paper said, “and then the annual ring widths were measured to the nearest 0.001 mm.”

From New York Times ● Sep. 7, 2022

Geoghan’s friends said he was known for deflecting praise, asking others to speak at the McDonald’s games’ annual ring ceremony.

From Washington Post ● Mar. 28, 2022

Each annual ring in the chestnut stump is distinct from its neighboring ring.

From Trees Worth Knowing by Rogers, Julia Ellen

If a section of a single annual ring of green wood of the shape A B C D, in Fig.

From Wood and Forest by Noyes, William

The wood of the year in which this occurs may exhibit a double annual ring, and the vigour of the tree is likely to suffer in the following season and no fruit be matured.

From Disease in Plants by Ward, H. Marshall