growth ring


noun


Nearby words

  1. growth hormone releasing factor,
  2. growth hormone-producing adenoma,
  3. growth hormone-releasing factor,
  4. growth line,
  5. growth rate,
  6. growth shares,
  7. growth substance,
  8. growth-onset diabetes,
  9. groyne,
  10. grozing iron

Origin of growth ring

First recorded in 1905–10

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


British Dictionary definitions for growth ring

growth ring

noun

another name for annual ring
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for growth ring

growth ring

A layer of wood formed in a plant during a single period of growth. Growth rings are visible as concentric circles of varying width when a tree is cut crosswise. They represent layers of cells produced by vascular cambium.♦ Most growth rings reflect a full year's growth and are called annual rings. But abrupt changes in the environment, especially in the availability of water, can cause a plant to produce more than one growth ring in a year. See more at dendrochronology.
A similar layer in a part of an animal marking a period of growth, such as an annulus in a fish scale.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.