Plateletpheresis (more accurately called thrombocytapheresis or thrombapheresis, though these names are rarely used) is the process of collecting thrombocytes, more commonly called platelets, a component of blood involved in blood clotting. The term specifically refers to the method of collecting the platelets, which is performed by a device used ...
The preparation of platelet concentrates with the return of red cells and platelet-poor plasma to the donor. ... (12 Dec 1998) ... 
(plāt″lәt-fә-re´sis) thrombocytapheresis.
[n] - platelets are separated from whole blood and the rest is returned to the donor
plateletpheresis The preparation of platelet concentrates with the return of red cells and platelet-poor plasma to the donor.
noun platelets are separated from whole blood and the rest is returned to the donor