chlorofluorocarbon: a fluorocarbon with chlorine; formerly used as a refrigerant and as a propellant in aerosol cans
fluorocarbon: a halocarbon in which some hydrogen atoms have been replaced by fluorine; used in refrigerators and aerosols
thrombosis: the formation or presence of a thrombus (a clot of coagulated blood attached at the site of its formation) in a blood vessel