/pik"leuh ram', puy"kleuh-/ , n. Chem.
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.
[ 1960-65; reverse compound from am ( inotrich ) lor ( o ) pic ( olinic acid ); see AMINO-, TRI-, CHLORO-, PICOLINIC ]