herbicide


her·bi·cide

noun \ˈ(h)ər-bə-ˌsīd\

: a chemical used to destroy plants or stop plant growth

Full Definition of HERBICIDE

:  an agent used to destroy or inhibit plant growth
her·bi·cid·al \ˌ(h)ər-bə-ˈsī-dəl\ adjective
her·bi·cid·al·ly \-dəl-ē\ adverb

Origin of HERBICIDE

Latin herba + International Scientific Vocabulary -cide
First Known Use: 1899

her·bi·cide

noun \ˈ(h)ər-bə-ˌsīd\   (Medical Dictionary)

Medical Definition of HERBICIDE

: an agent used to destroy or inhibit plant growth
her·bi·cid·al \ˌ(h)ər-bə-ˈsīd-əl\ adjective
her·bi·cid·al·ly \-əl-ē\ adverb

herbicide

noun    (Concise Encyclopedia)

Agent, usually chemical, for killing or inhibiting the growth of unwanted plants (weeds). Modern weed killers are put in two categories, selective (affecting specific plant species) and nonselective (affecting plants generally). These in turn are classified as foliage-applied and soil herbicides. Contact herbicides (e.g., sulfuric acid, diquat, paraquat) kill only the plant organs with which they are in contact. Translocated herbicides (e.g., amitrole, picloram, 2,4-D) are effective against roots or other organs, to which they are transported from aboveground treated surfaces (soil). See also defoliant.

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