apheresis

Definitions of apheresis
  1. 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
    synonyms: pheresis
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    types:
    plasmapheresis
    plasma is separated from whole blood and the rest is returned to the donor
    plateletpheresis
    platelets are separated from whole blood and the rest is returned to the donor
    type of:
    dialysis
    separation of substances in solution by means of their unequal diffusion through semipermeable membranes
  2. noun
    (linguistics) omission at the beginning of a word as in `coon' for `raccoon' or `till' for `until'
    synonyms: aphaeresis
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    type of:
    deletion, omission
    any process whereby sounds or words are left out of spoken words or phrases
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