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Definition of defoliant
defoliant
/diːˈfoʊ.li.ənt/
de · fo · li · ant
Plural:defoliants
•Adjective:defoliant
defoliant Lexical Profile
CEFR
C1
Grade
11
Tier
2
Usage
Rare
Syllables
4
defoliant Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
A chemical substance applied to plants or trees to cause their leaves to fall off prematurely, used in agriculture to facilitate harvesting or in land clearing.
Example
"Cotton growers sometimes apply a chemical defoliant in the autumn to make mechanical harvesting easier and cleaner."
Synonyms
View all synonyms for defoliant• adjective
1
Causing or tending to cause leaves to fall off plants or trees prematurely.
Example
"The agricultural team tested the defoliant properties of the new compound before applying it to the cotton fields."
• Rhymes for defoliant
Word Origin & Etymology
Coined in the mid-20th century from Late Latin defoliare ('to strip of leaves'), combining the prefix de- ('off, away') with folium ('leaf') and the agentive suffix -ant.
Cite this Entry
Wordmom. (2026). Definition of Defoliant. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/defoliant