dieldrin

American  

[deel-drin] / ˈdil drɪn /

noun

Chemistry.

1. a light tan, crystalline, water-insoluble, poisonous solid, C 12 H 8 OCl 6 , used as an insecticide: manufacture and use have been discontinued in the U.S.

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dieldrin British  

/ ˈdiːldrɪn /

noun

1. a crystalline insoluble substance, consisting of a chlorinated derivative of naphthalene: a contact insecticide the use of which is now restricted as it accumulates in the tissues of animals. Formula: C 12 H 8 OCl 6

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dieldrin Scientific  

/ dēl′drĭn /

1. A light tan, toxic, carcinogenic compound used as an insecticide on fruit, soil, and seed, and in controlling tsetse flies and other carriers of tropical diseases. Chemical formula: C ₁₂ H ₈ Cl ₆ O.

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Etymology

Origin of dieldrin

First recorded in 1945–50; Diel(s-Al)d(e)r (reaction) ( def. ) + -in ²

Example Sentences

See Examples For:

dieldrin

Aldrin is a still more mysterious substance, for although it exists as a separate entity, it bears the relation of alter ego to dieldrin.

From The New Yorker ● Jan. 3, 2017

Aldrin has been recovered after four years, both as traces and, more abundantly, as converted to dieldrin.

From The New Yorker ● Jan. 3, 2017

While the list of toxins found in the river decades later is still shocking - including PCB, dioxin and pesticides like DDT, dieldrin and toxaphene - the river has come back to life.

From Washington Times ● May 21, 2016

The EPA cancelled the registrations of ethylene dibromide, 2,4,5-T, dieldrin, and parathion, Milbourn said.

From Scientific American ● Oct. 6, 2014

In terms of their effects on birds, the prescribed use of heptachlor would be equivalent to 20 pounds of DDT to the acre, that of dieldrin to 120 pounds!

From "Silent Spring" by Rachel Carson