1. Noun. The herbicide ''4-amino-3,5,6-trichloropicolinic acid'' ¹
¹ Source: wiktionary.com
1. an herbicide [n -S] - See also: herbicide
1. A picolinic acid derivative that is used as a herbicide. Pharmacological action: herbicides. Chemical name: 2-Pyridinecarboxylic acid, 4-amino-3,5,6-trichloro- (12 Dec 1998)