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a combining form meaning “excision” of the part specified by the initial element, used in the formation of compound words:
Origin of -ectomy
< New Latin -ectomia. See ec-, -tomy Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for -ectomy


combining form
indicating surgical excision of a part: appendectomy
Word Origin
from New Latin -ectomia, from Greek ek- out + -tomy
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
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Word Origin and History for -ectomy

word-forming element meaning "surgical removal," from Greek -ektomia "a cutting out of," from ektemnein "to cut out," from ek "out" (see ex-) + temnein "to cut" (see tome).

Online Etymology Dictionary, © 2010 Douglas Harper
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-ectomy in Medicine

-ectomy suff.
Surgical removal: tonsillectomy.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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