Where does “petrosectomy” come from?

petrosectomy (English) comes from English -ectomy, from Ancient Greek ἐκτομή, from Ancient Greek ἐκτέμνω, from Ancient Greek τέμνω, from Proto-Indo-European -né- — Forms mostly transitive imperfective verbs from...

petrosectomy (English): The removal of air cells from a bone, typically from the temporal bone before a cochlear implant

Definitions

  1. The removal of air cells from a bone, typically from the temporal bone before a cochlear implant

Ancestry of “petrosectomy”, step by step

StepLanguageWordMeaning
1English-ectomyExcision of; Surgical removal of
2Ancient Greekἐκτομήa cutting out; a segment
3Ancient Greekἐκτέμνωto cut out; to castrate; to divide, zone
4Ancient GreekτέμνωI cut, hew; I maim, wound; I butcher, sacrifice
5Proto-Indo-European-né-Forms mostly transitive imperfective verbs from...
Every word from Proto-Indo-European -né-Every word from Ancient Greek τέμνωEvery word from English -ectomy