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

Example Sentences

See Examples For:

heptachlor

BHC persists a least eleven years, and heptachlor at least nine.

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

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 other experiments BHC, aldrin, lindane, heptachlor, and DDD all prevented nitrogen-fixing bacteria from forming the necessary root nodules on leguminous plants.

From "Silent Spring" by Rachel Carson