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picloram

[ pik-luh-ram, pahy-kluh- ]

noun

, Chemistry.
  1. a colorless powder, C 6 H 3 Cl 3 N 2 O 2 , used as a systemic herbicide for controlling annual weeds and deep-rooted perennials on noncrop land.


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Word History and Origins

Origin of picloram1

1960–65; reverse compound from am(inotrich)lor(o)pic(olinic acid) ; amino-, tri-, chloro- 2, picolinic

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