from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The regular shedding branches by a plant, for clonal reproduction, "self-pruning" or in response to stress.
from The Century Dictionary and Cyclopedia
- n. In botany, the annual falling of leafy twigs instead of individual leaves, such as takes place in many of the cypress family.
clado- + ptosis (Wiktionary)