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Also, aphaeresis. the loss or omission of one or more letters or sounds at the beginning of a word, as in squire for esquire, or count for account.
Medicine/Medical. the withdrawal of whole blood from the body, separation of one or more components, and return by transfusion of remaining blood to the donor.
the omission of a letter or syllable at the beginning of a word
a method of collecting blood from donors that enables its different components, such as the platelets or plasma, to be separated out

apheresis aph·e·re·sis (āf’ə-rē’sĭs)
A procedure in which blood is drawn from a donor and separated into its components, some of which are retained, such as plasma or platelets, and the remainder returned by transfusion to the donor. Also called hemapheresis.


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  • Aphesis

    the disappearance or loss of an unstressed initial vowel or syllable, as in the formation of the word slant from aslant. Historical Examples aphesis is the loss of the unaccented first syllable, as in ‘baccy and ‘later. The Romance of Names Ernest Weekley This English tendency to aphesis is satirised in a French song of […]

  • Aphetic

    pertaining to or due to . Historical Examples The tender of a ship or of a locomotive is the attender, and taint is aphetic for attaint, Fr. The Romance of Words (4th ed.) Ernest Weekley For limner we find in the 15th century lumner and luminour, which is aphetic for alluminour, or enlumineur. The Romance […]

  • Aphet.

    aphet. aphetic aphetized

  • Aphid

    any of numerous tiny soft-bodied insects of the family Aphididae of worldwide distribution, that suck the sap from the stems and leaves of various plants, some developing wings when overcrowding occurs: an important pest of many fruit trees and vegetable crops. Historical Examples I once observed a young spider approaching an aphid, which was facing […]

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