picloram

American

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

noun

Chemistry.

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"White," a mixture of a persistent chemical called Picloram and 2,4-di-chlorophenoxyacetic acid, causes leaves to shower from trees within weeks.

From Time Magazine Archive

These include 2,4-D, dicamba, picloram, metsulfuron methyl, clopyralid and triasulfuron.

From Time Magazine Archive

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