Dictionary.com

apheresis

[ uh-fer-uh-sis for 1; af-uh-ree-sis for 2 ]
/ əˈfɛr ə sɪs for 1; ˌæf əˈri sɪs for 2 /
Save This Word!

noun
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.

COMPARE MEANINGS

Click for a side-by-side comparison of meanings. Use the word comparison feature to learn the differences between similar and commonly confused words.
QUIZ
WILL YOU SAIL OR STUMBLE ON THESE GRAMMAR QUESTIONS?
Smoothly step over to these common grammar mistakes that trip many people up. Good luck!
Question 1 of 7
Fill in the blank: I can’t figure out _____ gave me this gift.

Origin of apheresis

1605–15; <Late Latin aphaeresis<Greek aphaíresis a taking away, equivalent to aphairé(în) to take away (ap-ap-2 + haireîn to snatch) + -sis-sis

OTHER WORDS FROM apheresis

aph·e·ret·ic [af-uh-ret-ik], /ˌæf əˈrɛt ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for apheresis

apheresis

aphaeresis

/ (əˈfɪərɪsɪs) /

noun
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

Derived forms of apheresis

apheretic or aphaeretic (ˌæfəˈrɛtɪk), adjective

Word Origin for apheresis

C17: via Late Latin from Greek, from aphairein to remove
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
FEEDBACK