a combining form meaning “excision” of the part specified by the initial element, used in the formation of compound words: tonsillectomy.

Nearby words

  1. -dromous,
  2. -ea,
  3. -eae,
  4. -ean,
  5. -ectasia,
  6. -ed,
  7. -ee,
  8. -een,
  9. -eer,
  10. -ein

Origin of -ectomy

< New Latin -ectomia. See ec-, -tomy

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for -ectomy


n combining form

indicating surgical excision of a partappendectomy

Word Origin for -ectomy

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

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

Medicine definitions for -ectomy



Surgical removal:tonsillectomy.

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