noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The separation of ripened leaves from a branch or stem; the falling or shedding of the leaves. countable, uncountable
2. 2
   causing the leaves of trees and other plants to fall off (as by the use of chemicals) wordnet
3. 3
   the loss of foliage wordnet

Etymology

From defoliate + -ion.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.