mecoprop
/ˈmɛkəʊprɒp/ /ˈmiːkəʊprɒp/Agriculture and Horticulture
noun
A selective herbicide, used alone and with other herbicides, especially to control weeds of cereal crops and grassland; (±)-2-(4-chloro-2-methylphenoxy)-propanoic acid, C10H11Cl O3.
Origin
1950s; earliest use found in Weed Abstracts. From me- + c- and -o- (in chloro-) + prop-.