2,4–D

noun \ˌtü-ˌfȯr-ˈdē\

Definition of 2,4-D

: a white crystalline irritant compound C₈H₆Cl₂O₃ used especially as a weed killer

di-

First Known Use: circa 1945

Medical Dictionary

noun \ˌtü-ˌfōr-ˈdē, -ˌfȯr-\

: a white crystalline irritant compound C₈H₆Cl₂O₃ used as a weed killer—called also 2,4-dichlorophenoxyacetic acid; see agent orange

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