Meaning

noun (linguistics) omission at the beginning of a word as in `coon' for `raccoon' or `till' for `until'

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

originEtymology tree Proto-Indo-European *h₂ep Proto-Indo-European *-o Proto-Indo-European *h₂epó Proto-Hellenic *apó Ancient Greek ᾰ̓πό (ăpó) Ancient Greek ἀπο- (apo-) Proto-Indo-European *ser-der.? Proto-Indo-European *selh₁-der.? Ancient Greek αἱρέω (hairéō) Ancient Greek ἀφαιρέω (aphairéō) Proto-Indo-European *-tis Ancient Greek -τις (-tis) Ancient Greek -σῐς (-sĭs) Ancient Greek ἀφαίρεσῐς…

Etymology from Wiktionary, CC BY-SA 3.0