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weed killer

Babylon English English dictionary

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weed killer
type of chemical agent used to destroy weeds

Wikipedia English The Free Encyclopedia

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Herbicide(s), also commonly known as weedkillers, are chemical substances used to control unwanted plants. Selective herbicides control specific weed species, while leaving the desired crop relatively unharmed, while non-selective herbicides (sometimes called "total weedkillers" in commercial products) can be used to clear waste ground, industrial and construction sites, railways and railway embankments as they kill all plant material with which they come into contact. Apart from selective/non-selective, other important distinctions include persistence (also known as residual action: how long the product stays in place and remains active), means of uptake (whether it is absorbed by above-ground foliage only, through the roots, or by other means), and mechanism of action (how it works). Historically, products such as common salt and other metal salts were used as herbicides, however these have gradually fallen out of favor and in some countries a number of these are banned due to their persistence in soil, and toxicity and groundwater contamination concerns. Herbicides have also been used in warfare and conflict.

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WordNet 2.0 Dictionary

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weed killer

1. a chemical agent that destroys plants or inhibits their growth
(synonym) herbicide, weedkiller
(hypernym) chemical
(hyponym) Agent Orange
(substance-meronym) arsenic, As, atomic number 33

Moby Thesaurus

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weed killer
Synonyms and related words:
acaricide, anthelmintic, antibiotic, antiseptic, bug bomb, carbamate insecticide, chemosterilant, chlorinated hydrocarbon insecticide, contact poison, defoliant, disinfectant, eradicant, fumigant, fungicide, germicide, herbicide, insect powder, insecticide, microbicide, miticide, organic chlorine, organic phosphate insecticide, pesticide, poison, rat poison, roach paste, roach powder, rodenticide, stomach poison, systemic, systemic insecticide, toxic, toxicant, toxin, venin, venom, vermicide, virus

Source: Moby Thesaurus, which is part of the Moby Project created by Grady Ward. In 1996 Grady Ward placed this thesaurus in the public domain.

Free English-Vietnamese Dictionary

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weed-killer /'wi:d,kil /
  • danh từ
    • thuốc diệt cỏ dại

    (C) 2007 www.TừĐiểnTiếngViệ

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