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picloram

American  
[pik-luh-ram, pahy-kluh-] / ˈpɪk ləˌræm, ˈpaɪ klə- /

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.

Etymology

Origin of picloram

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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.