annual ring

noun

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

annual ring

noun

1. 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 Also calledtree ring

annual ring

1. See under growth ring

Word History and Origins

Origin of annual ring¹

First recorded in 1875–80