First Known Use: circa 1945
Dictionary
2,4–D
noun \ˌtü-ˌfȯr-ˈdē\
Definition of 2,4-D
: a white crystalline irritant compound C8H6Cl2O3 used especially as a weed killer
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Origin of 2,4-D
di-
Medical Dictionary
2,4–D
noun \ˌtü-ˌfōr-ˈdē, -ˌfȯr-\
Medical Definition of 2,4–D
: a white crystalline irritant compound C8H6Cl2O3 used as a weed killer—called also 2,4-dichlorophenoxyacetic acid; see agent orange
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