-tomy(redirected from -otomy)
Also found in: Medical.
Act of cutting; incision: gastrotomy.
n combining form
(Surgery) indicating a surgical cutting of a specified part or tissue: lobotomy.
[from Greek -tomia; see -tome]
a combining form meaning “division” (trichotomy), “cutting, dissection, surgical incision” (laparotomy; lobotomy), “excision” of an object (lithotomy).