(organic chemistry) A chlorofluorocarbon halomethane formerly used as a refrigerant and aerosol spray propellant, now banned in many countries because of its effects on the ozone layer.
dihdroxycholecalciferol
formaldehydesulphoxylic
polytetrafluoroethylene
polytetrafluoroethylene
noun
A tough synthetic resin used to make seals and bearings and to create a nonstick coating on cooking utensils.
