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

If the diet contains as little as a tenth of one part per million, there will be measurable amounts of heptachlor in the body.

From The New Yorker ● Jan. 3, 2017

“Among those who drank the most milk, residues of heptachlor epoxide were found in nine of 10 brains as compared to 63.4 percent for those who consumed no milk,” the researchers wrote.

From MSNBC ● Dec. 10, 2015

Studies have detected known carcinogens such as heptachlor and ethion in the blood of Punjabi citizens and the breast milk of new mothers, as well as in grains, cotton and vegetables harvested from the fields.

From New York Times ● Jul. 30, 2013

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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