-tome

1.
a combining form with the meanings “cutting instrument” (microtome; osteotome), “segment, somite” (sclerotome), used in the formation of compound words.
Compare tomo-, -tomous, -tomy.
Origin
combining form representing Greek tomḗ a cutting; tómos a cut, slice; -tomon (neuter), -tomos (masculine) -cutting (adj.)
British Dictionary definitions for -tome

-tome

combining form
1.
indicating an instrument for cutting: osteotome
Word Origin
from Greek tomē a cutting, tomos a slice, from temnein to cut
-tome in Medicine

-tome suff.

  1. Part; area; segment: dermatome.

  2. Cutting instrument: microtome.