- primary tissue derived from an apical meristem.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- One of the three meristems in vascular plants (the procambium, protoderm, or ground meristem) derived from an apical meristem. Compare lateral meristem. See more at apical meristem primary growth.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.