Where does “astro” come from?

astro (Portuguese) comes from Latin astrum, from Ancient Greek ἄστρον, from Ancient Greek ἀστήρ, from Proto-Hellenic astḗr, from Proto-Indo-European h₂stḗr, from Proto-Indo-European h₂eHs- — to be/become dry; to burn, to glow; hearth.

astro (Portuguese): celestial body; celebrity, star

Definitions

  1. celestial body; celebrity, star

Ancestry of “astro”, step by step

StepLanguageWordMeaning
1Latinastruma star
2Ancient GreekἄστρονA celestial body
3Ancient Greekἀστήρa celestial body; illustrious person; starfish
4Proto-Hellenicastḗrstar
5Proto-Indo-Europeanh₂stḗrstar
6Proto-Indo-Europeanh₂eHs-to be/become dry; to burn, to glow; hearth
Every word from Proto-Indo-European h₂eHs- →Every word from Proto-Indo-European h₂stḗr →Every word from Proto-Hellenic astḗr →