annual ring


noun

an annual formation of wood in plants, consisting of two concentric layers, one of springwood and one of summerwood.
Also called growth ring, tree ring.

Origin of annual ring

First recorded in 1875–80

British Dictionary definitions for annual ring

annual ring

noun

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 called: tree ring

Scientific definitions for annual ring

annual ring

See under growth ring.