English
electrotome
From electro- + -tome.
Proto-Indo-European *temh₁- ‘to cut’
…
Ancient Greek τέμνω ‘to cut, separate’
Ancient Greek τόμος ‘section, roll of papyrus, volume’
Latin tomus ‘section of larger work’
Middle French tome
English tome
Today it means
noun The cutting instrument used in electrotomy
Language periods are conventional ranges, not dates for this word.
Etymograph / electrotome