herbicide

(redirected from weed killer)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to weed killer: roundup

herbicide

 [her´bĭ-sīd]
an agent that is destructive to weeds or causes an alteration in their normal growth.

herbicide

[er′-, her′bisīd]
an agent that is destructive to weeds or causes an alteration in their normal growth.

herb·i·cide

(ĕr'bi-sīd)
Any chemical compound designed to kill plants. Herbicides have been used in military operations for deforestation, but the U.S. military excludes herbicides from being classified as chemical-warfare agents.

herbicide

any chemical that kills plants. Herbicides can be highly selective. For example, 2,4-D only kills DICOTYLEDONS (broad-leaved plants), leaving MONOCOTYLEDONS unharmed.

herbicide

a substance that destroys weeds. A large number of chemical compounds are used as general and selective herbicides. Most of them have very low toxicity because their availability to animals on recently sprayed pasture is an obvious toxic hazard. Most poisoning incidents arise when animals have accidental access to large volumes of the agent, e.g. if there has been a spillage. The well-known herbicide groupings are bipyridyls, chlorinated acids, dinitro compounds, phenoxyacid derivatives, thiocarbamates and triazines.
References in periodicals archive ?
We would urge anyone with any information about this crime, or if they come across the weed killer, to get in touch with us immediately on the 101 number.
Rather than cover all of the details of how residual weed killers work, we suggest you purchase these products from your local grain dealer.
Washington, May 28 ( ANI ): Exposure to pesticides, or bug and weed killers, and solvents is likely associated with a higher risk of developing Parkinson's disease, a large analysis of more than 100 studies from around the world has revealed.
Although Francois wasn't the first to file a suit over the weed killer, he is the first to be successful.
Turns out, the product I had purchased was grass and weed killer.
The weed killer not only increases the likelihood that massive concentrations of flatworms will thrive in the amphibians' ponds, a new study reports, but also diminishes the ability of larval frogs to fight infection with these parasites.
All of a sudden I realized that we hadn't put down the 2,4-D weed killer yet, and boom
But the council would rather have their insurance company pay a for a claim than fork out for some weed killer.
The materials included weed killer, sugar, matches, bearings and a metal hollow tube which were allegedly found at Hill's address in Lambert Street, Skipton, North Yorkshire.
I MUST thank John Wilson for explaining to me why anybody at all would want to spray weed killer on set aside land (Voice of the North, October 11).
A weed killer is dumped into the swimming pool, causing a young athlete's skin to ripple and turn a painful red, yellow, and blue; the bolts from a scaffold are loosened and two workers plummet to their death; and the site manager has disappeared without a trace.