The story
- Proto-Indo-European*h₂eHs-
- Proto-Indo-European*h₂stḗr
- Proto-Hellenic*astḗr
- Ancient Greekἀστήρ (astḗr)
- Ancient Greekᾰ̓́στρον (ắstron)
- Englishastro-
- Englishnavigation
- English todayastronavigation
From astro- + navigation.
Etymology from Wiktionary, CC BY-SA 4.0.