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WORDNET DICTIONARY
OXFORD DICTIONARY
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WORDNET DICTIONARY

Noun herbicide has 1 sense

• herbicide(n = noun.substance) weed killer, weedkiller - a chemical agent that destroys plants or inhibits their growth; Array
has particulars: agent orange, atrazine, linuron, paraquat, silvex, simazine
is a kind of chemical, chemical substance

OXFORD DICTIONARY

THESAURUS

herbicide

aborticide, acaricide, anthelmintic, antibiotic, antiseptic, bug bomb, carbamate insecticide, chemosterilant, chlorinated hydrocarbon insecticide, contact poison, defoliant, disinfectant, eradicant, fratricide, fumigant, fungicide, genocide, germicide, homicide, infanticide, insect powder, insecticide, matricide, microbicide, miticide, organic chlorine, organic phosphate insecticide, parricide, patricide, pesticide, poison, rat poison, regicide, roach paste, roach powder, rodenticide, sororicide, stomach poison, suicide, systemic, systemic insecticide, toxic, toxicant, toxin, uxoricide, venin, venom, vermicide, virus, weed killer

For further exploring for "herbicide" in Webster Dictionary Online