2,4-dichlorophenoxyacetic acid (2,4-dichlorophenoxyethanoic acid): a synthetic auxin frequently used as a weedkiller of broad-leaved weeds. See alsopesticide.
Biology
2,4-dichlorophenoxyacetic acid (2,4-dichlorophenoxyethanoic acid): a synthetic auxin used as a weedkiller of broad-leaved weeds. See alsopesticide.