from The American Heritage® Dictionary of the English Language, 4th Edition
- suffix Act of cutting; incision: gastrotomy.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- suffix cutting, incision, section
New Latin -tomia, from Greek -tomiā, from tomos, a cutting, from temnein, to cut.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek τέμνω (temnō, "I cut"). (Wiktionary)