11 letters · 15 points in Scrabble
noun the loss of foliage
noun causing the leaves of trees and other plants to fall off (as by the use of chemicals)
originEtymology tree English defoliate Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiō Latin -ātiōlbor. Old French -ationbor. Middle English -acioun English -ation English -ion English defoliation From defoliate + -ion.
Etymology from Wiktionary, CC BY-SA 3.0