The story
- Englishmediastinum
- Proto-Indo-European*speḱ-
- Proto-Indo-European*spéḱyeti
- Proto-Hellenic*sképt͏̌omai
- Ancient Greekσκέπτομαι (sképtomai)
- Ancient Greekσκοπός (skopós)
- Ancient Greekσκοπέω (skopéō)
- English todaymediastinoscopy
From mediastinum + -o- + -scopy.
Etymology from Wiktionary, CC BY-SA 4.0.