ˌplazməˈferəsə̇s noun
also plas·ma·phore·sis -_fəˈrēsə̇s, -ˈfȯrəs-
( plural plasmaphere·ses -ˌsēz)
Etymology: plasmapheresis, New Latin, from plasm- + Greek aphairesis action of taking off, removal; plasmaphoresis, New Latin, alteration (influenced by -phoresis ) of plasmapheresis — more at aphaeresis
: a process in which blood constituents and especially red blood cells are separated from the plasma of an individual and returned to his circulatory system intact if he is a blood donor or minus various abnormal constituents (as sickle cells) if he is a patient