8 letters · 13 points in Scrabble
noun a procedure in which blood is drawn and separated into its components by dialysis; some are retained and the rest are returned to the donor by transfusion
originIn medicine, perhaps a back-formation from compounds such as plasmapheresis. The linguistics term may be a self-referential pun as with haplogy for haplology.
Etymology from Wiktionary, CC BY-SA 3.0