/dal"euh pon'/ , n. Chem.
a selective herbicide, C 3 H 4 Cl 2 O 2 , used to eradicate certain grass weeds in sugarcane and other crops.
[ 1950-55; prob. d ( i ) -al ( ph ) a- ( dichloropro ) p ( i ) on ( ic acid ), an alternate chemical name; see DI- 1 , ALPHA, CHLORO-, PROPIONIC ]