Wiktionary
chloroacetic acid
n. (context organic compound English) The chlorinated derivative of acetic acid CH2Cl-COOH that is used in organic synthesis
Wikipedia
Chloroacetic acid
Chloroacetic acid, industrially known as monochloroacetic acid (MCA) is the organochlorine compound with the formula ClCHCOH. This carboxylic acid is a useful building-block in organic synthesis.