from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A growth layer in secondary xylem seen in a cross section of a woody stem or branch.
  • noun A layer of calcareous material or other substance deposited in a single period of growth of an animal, as in an otolith or a turtle scute.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun Any of the concentric rings formed in the trunk of a tree by the annual growth of wood

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun an annual formation of wood in plants as they grow


Sorry, no etymologies found.


    Sorry, no example sentences found.


Log in or sign up to get involved in the conversation. It's quick and easy.