-stomy

1. 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.

-stomy

combining form

1. indicating a surgical operation performed to make an artificial opening into or for a specified part

   cytostomy

Word History and Origins

Origin of -stomy¹

< Greek -stomia, derivative of stóma mouth. See -stome, -y ³

Word History and Origins

Origin of -stomy¹

from Greek -stomia, from stoma mouth