Definition of -tome in US English:

-tome

combining form

  • 1Denoting an instrument for cutting.

    ‘microtome’
  • 2Denoting a section or segment.

    ‘myotome’

Origin

-tome (sense 1) from Greek -tomon (neuter) ‘that cuts’; -tome (sense 2) from Greek tomē ‘a cutting’, both from temnein ‘to cut’.