acyl halide
any chemical compound having a halogen atom bonded to an acyl group
acyl chloride
any chemical compound having a chlorine atom bonded to an acyl group
carboxylic acid halide
any chemical compound having a halogen atom bonded to a carboacyl group
sulfonyl halide
class of compounds
inorganic acyl halide
any inorganic compound having a halogen atom bonded to an acyl group