from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A meristem in vascular plants, such as the cambium, in which secondary growth occurs.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Meristem forming a cylinder within some plants' organs (primarily stems, branches and roots) and allowing them to increase in girth (lateral growth).
Sorry, no etymologies found.