heptachlor

American  

[hep-tuh-klawr, -klohr] / ˈhɛp təˌklɔr, -ˌkloʊr /

noun

1. a highly toxic, light-tan, waxy solid, C 10 H 5 Cl 7 , used as an insecticide: its manufacture and use are restricted in the U.S.

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heptachlor Scientific  

/ hĕp′tə-klôr′ /

1. A white or tan powder used as a pesticide. Because it is highly toxic to humans and is a suspected carcinogen, its use has been largely discontinued. Chemical formula: C ₁₀ H ₅ Cl ₇ .

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Etymology

Origin of heptachlor

First recorded in 1945–50; hepta- + chlor- ²

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Example Sentences

See Examples For:

heptachlor

Within a year after the heptachlor was applied, in both dust and spray forms, the vines in the treated yards were wilting and dying.

From The New Yorker ● Jan. 3, 2017

Four years later, the soil still contained heptachlor, and scientists were unable to predict how long it would remain poisonous, or to recommend any procedure for correcting the condition.

From The New Yorker ● Jan. 3, 2017

The researchers also looked for the pesticide heptachlor, which was taken off the market for most uses in the U.S. in 1988.

From MSNBC ● Dec. 10, 2015

She argued that synthetic pesticides like DDT and heptachlor were being applied in profligate quantities without regard to their effect on human health, animals and the environment.

From New York Times ● Oct. 28, 2012

In treated fields the grasses will inevitably carry residues of heptachlor in one of its forms, and if the residues are eaten by the cows the poison will appear in the milk.

From "Silent Spring" by Rachel Carson

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