noun ace·to·chlor \ə-ˈsē-tō-ˌklȯr\

Definition of acetochlor

  1. :  an herbicide C14H20ClNO2 that is typically applied before the emergence of crop seedlings aboveground and is used to control grasses and broad-leaved weeds acetochlor, a herbicide commonly used by farmers to control weeds in corn. — Mary Divine & Dennis Lien, St. Paul (Minnesota) Pioneer Press, 26 Sept. 2007

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Origin and Etymology of acetochlor

aceto- + -chlor (as in alachlor)

First Known Use: circa 1971

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