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lead arsenate

American  
[led] / lɛd /

noun

Chemistry.
  1. a white, crystalline, water-insoluble, highly poisonous powder, PbHAsO 4 , used as an insecticide.


lead arsenate British  
/ lɛd /

noun

  1. a white insoluble toxic crystalline powder used as an insecticide and fungicide. Formula: Pb 3 (AsO 4 ) 2

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of lead arsenate

First recorded in 1900–05

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In 1988, he warned against eating Florida grapefruits because they had been sprayed with lead arsenate to speed ripening.

From New York Times • Dec. 17, 2012

"I may have Alar on my apples, lead arsenate on my grapefruit, captan on my vegetables," says Jay Feldman, national coordinator of the National Coalition Against the Misuse of Pesticides.

From Time Magazine Archive

It was sprayed onto fruit as a pesticide in the form of lead arsenate.

From "A Short History of Nearly Everything" by Bill Bryson

Another insect to learn the profitable way of resistance was the codling moth, or appleworm, in the 1920’s, although lead arsenate had been used successfully against it for some 40 years.

From "Silent Spring" by Rachel Carson

Use 3 pounds of lead arsenate or 2 pounds of 50-percent DDT wettable powder in 100 gallons of water.

From Northern Nut Growers Association Report of the Proceedings at the 43rd Annual Meeting Rockport, Indiana, August 25, 26 and 27, 1952 by Northern Nut Growers Association

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