Also found in: Medical, Encyclopedia.
Related to primary meristem: secondary meristem
One of the three kinds of meristematic tissue (procambium, protoderm, and ground meristem) that are derived from an apical meristem of a vascular plant.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.