picloram
/ˈpɪkləram/noun
A derivative of picolinic acid used as a herbicide and defoliant against deep-rooted weeds and woody plants; 4-amino-3,5,6-trichloropicolinic acid, C5NCl3NH2·COOH.
Origin
1960s; earliest use found in B.S.I. News. From pic- + -lor- (in chloro-) + -am (in amino-).
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