a combining form used in the names of surgical operations that involve the establishment of an artificial opening into or between the part or parts specified by the initial element: gastrostomy.

Nearby words

  1. -stat,
  2. -ster,
  3. -stichous,
  4. -stome,
  5. -stomous,
  6. -stress,
  7. -style,
  8. -sy,
  9. -t,
  10. -tactic

Origin of -stomy

< Greek -stomia, derivative of stóma mouth. See -stome, -y3

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

British Dictionary definitions for -stomy


n combining form

indicating a surgical operation performed to make an artificial opening into or for a specified partcytostomy

Word Origin for -stomy

from Greek -stomia, from stoma mouth

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

Medicine definitions for -stomy



A surgical operation in which an artificial opening is made into an organ or part:colostomy.

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