dalapon

[dal-uh-pon]

noun Chemistry.

a selective herbicide, C3H4Cl2O2, used to eradicate certain grass weeds in sugarcane and other crops.

Origin of dalapon

1950–55; probably d(i)-al(ph)a-(dichloropro)p(i)on(ic acid), an alternate chemical name; see di-¹, alpha, chloro-², propionic