atrazine
noun
at·ra·zine ˈa-trə-ˌzēn 
: a photosynthesis-inhibiting persistent herbicide C8H14ClN5 used especially to kill annual weeds and quack grass
Example Sentences
Recent Examples on the Web That means the wallabies are more vulnerable to external threats, such as chemical pollutants, and are likely to more clearly show effects of things like atrazine exposure, writes Corryn Wetzel for Nat Geo. 
National Geographic, 10 Sep. 2020 Pask disagrees, citing evidence of high atrazine spikes in Australian streams. Corryn Wetzel, National Geographic, 9 Sep. 2020 Aerial spraying can allow toxic chemicals like glyphosate, 2,4-D and atrazine to drift long distances or get into waterways that serve as drinking water sources. oregonlive, 10 Feb. 2020 Those pesticides included atrazine (26%), chlorpyrifos (59%), cypermethrin (49%), diazinon (60%), and permethrin (46%). Rebekah Tuchscherer, USA TODAY, 26 June 2019 Take atrazine, a weed killer that's widely used on agricultural crops (especially corn) as well as on golf courses and residential lawns and along highways. Rachael Moeller Gorman, Good Housekeeping, 15 Aug. 2012 As a control, one field was treated with atrazine before the corn was planted (a full control using no herbicides at all would have been destroyed by weeds without an overwhelming amount of hand weeding). The Economist, 1 Mar. 2018 Atrazine: A herbicide, found within legal limits and above state and national averages. Ian Cummings, kansascity, 4 Aug. 2017 Some chemicals of concern include estrogens from birth control pills, the plasticizer bisphenol A, and the herbicide atrazine. National Geographic, 3 Feb. 2016 See More
National Geographic, 10 Sep. 2020 Pask disagrees, citing evidence of high atrazine spikes in Australian streams. Corryn Wetzel, National Geographic, 9 Sep. 2020 Aerial spraying can allow toxic chemicals like glyphosate, 2,4-D and atrazine to drift long distances or get into waterways that serve as drinking water sources. oregonlive, 10 Feb. 2020 Those pesticides included atrazine (26%), chlorpyrifos (59%), cypermethrin (49%), diazinon (60%), and permethrin (46%). Rebekah Tuchscherer, USA TODAY, 26 June 2019 Take atrazine, a weed killer that's widely used on agricultural crops (especially corn) as well as on golf courses and residential lawns and along highways. Rachael Moeller Gorman, Good Housekeeping, 15 Aug. 2012 As a control, one field was treated with atrazine before the corn was planted (a full control using no herbicides at all would have been destroyed by weeds without an overwhelming amount of hand weeding). The Economist, 1 Mar. 2018 Atrazine: A herbicide, found within legal limits and above state and national averages. Ian Cummings, kansascity, 4 Aug. 2017 Some chemicals of concern include estrogens from birth control pills, the plasticizer bisphenol A, and the herbicide atrazine. National Geographic, 3 Feb. 2016 See More Word History
Etymology
perhaps from amino + triazine
First Known Use
1959, in the meaning defined above