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2,4-D

British  

noun

  1. a synthetic auxin widely used as a weedkiller; 2,4-dichlorophenoxyacetic acid

"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

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The bad news is that higher glyphosate concentrations were linked to lower scores in social perception, while higher 2,4-D concentrations were linked to problems memory and learning, language and attention and inhibitory control.

From Salon Oct. 12, 2023

The herbicide 2,4-D was developed as a biochemical weapon that would later be used in Agent Orange.

From Los Angeles Times Aug. 11, 2023

The benzene ring is also found in the herbicide 2,4-D.

From Textbooks Jun. 9, 2022

The plant in his hands was a Palmer amaranth descendant that had demonstrated resistance to 2,4-D, one of two active ingredients in compounds used to defoliate forests during the Vietnam War.

From New York Times Aug. 18, 2021

After long and careful study, the chemists at the plant concluded that the 2,4-D had been formed spontaneously in the open basins.

From "Silent Spring" by Rachel Carson

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