dichlorophenoxyacetic acid


di•chlo′ro•phe•nox′y•a•ce′tic ac′id

(daɪˈklɔr oʊ fɪˈnɒk si əˈsi tɪk, -əˈsɛt ɪk, daɪˈkloʊr-, daɪˌklɔr oʊ fɪˌnɒk-, daɪˌkloʊr-)

n. a crystalline powder, C8H6O3Cl2, used for killing weeds. Also called 2,4-D.