- the dropping of a letter, syllable, or phoneme at the beginning of a word (Ex.: 'cause for because)also sp. aphaer′esis
- a medical procedure in which blood is taken from a donor, and some component, as the plasma or platelets, is separated from the blood cells in a centrifuge: the blood cells are then returned to the donor's circulatory system
Origin of apheresisLate Latin aphaeresis ; from Classical Greek aphairesis ; from aphairein, to take away ; from apo-, away + hairein, to take
- Linguistics Variant of aphaeresis.
- aph·e·re·sis Medicine 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.
(plural aphereses) (US, Canada)
- (linguistics, prosody) Elision, suppression, or complete loss of a letter or sound (syllable) from the beginning of a word, such as the development of special from especial; procope.
- (medicine, specific, still current) The removal of blood from a patient, and the removal of certain components (such as platelets) from that blood, followed by the transfusion of the filtered blood back to the donor (patient).
From Latin aphaeresis, from Ancient Greek ἀφαίρεσις (aphairesis, “a taking away”), from ἀφαιρέειν (aphaireein) (from ἀφ- (aph-) (aph-, “aph-”, variant of ἀπό (apo, “off”, “away from”) before an aspirated vowel) + αἱρέειν (aireein, “to take”, “to snatch”)) + -σις (-sis) (-sis, suffix forming nouns of action); the grammatical sense developed in Latin.