The story
- Latinradius
- Englishradio-
- Proto-Indo-European*kʷelh₁-
- Ancient Greekτῆλε (têle)
- Englishtele-
- Proto-Indo-European*speḱ-
- Proto-Indo-European*spéḱyeti
- Proto-Hellenic*sképt͏̌omai
- Ancient Greekσκέπτομαι (sképtomai)
- Ancient Greekσκοπός (skopós)
- Ancient Greekσκοπέω (skopéō)
- Englishtelescopic
- English todayradiotelescopic
From radio- + telescopic.
Etymology from Wiktionary, CC BY-SA 4.0.