acetochlor

noun

ace·​to·​chlor ə-ˈsē-tō-ˌklȯr 

: 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

Word History

Etymology

aceto- + -chlor (as in alachlor)

First Known Use

circa 1971, in the meaning defined above

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