释义 |
di·chlo·ro·phenoxyacetic acid \“+...-\ noun Etymology: dichlor- + phenoxyacetic : a white crystalline compound Cl2C6H3OCH2COOH made from 2,4-dichloro-phenol and chloroacetic acid that is a growth regulator for plants and is used especially in the form of salts and esters as a weed killer — usually used with initial numbers < 2,4-dichlorophenoxyacetic acid > — called also 2,4-D |