Where does “astro” come from?

astro (Esperanto) comes 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 (Esperanto): celestial body, heavenly body

Definitions

  1. celestial body, heavenly body

Ancestry of “astro”, step by step

StepLanguageWordMeaning
1Ancient GreekἄστρονA celestial body
2Ancient Greekἀστήρa celestial body; illustrious person; starfish
3Proto-Hellenicastḗrstar
4Proto-Indo-Europeanh₂stḗrstar
5Proto-Indo-Europeanh₂eHs-to be/become dry; to burn, to glow; hearth

Words derived from “astro”

Every word from Proto-Indo-European h₂eHs- →Every word from Proto-Indo-European h₂stḗr →Every word from Proto-Hellenic astḗr →
astro — Etymology, Origin & Word History | Etymology Explorer