Where does “astronut” come from?

astronut (English) comes from English astronaut, from English astro-, 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.

astronut (English): A person with an obsessive interest in astronomy

Definitions

  1. A person with an obsessive interest in astronomy

Ancestry of “astronut”, step by step

astronut traces back through two separate lines of ancestry.

via English astronaut

StepLanguageWordMeaning
1EnglishastronautA member of the crew of a spaceship or other...
2Englishastro-celestial bodies: fixed stars, wandering stars (planets), etc.; space; astronomy
3Ancient GreekἄστρονA celestial body
4Ancient Greekἀστήρa celestial body; illustrious person; starfish
5Proto-Hellenicastḗrstar
6Proto-Indo-Europeanh₂stḗrstar
7Proto-Indo-Europeanh₂eHs-to be/become dry; to burn, to glow; hearth

via English Nut

StepLanguageWordMeaning
1EnglishNutThe goddess who serves as the personification of the sky
2Middle Englishnotenote; Alternative form of not
3Old Englishnotuuse; enjoyment; profit, advantage, utility
4Proto-Germanicnutōuse, profit, yield
5Proto-Indo-Europeannewd-to seize; grasp; use; to grasp, seize, use; to...
Every word from Proto-Indo-European h₂eHs-Every word from Proto-Indo-European h₂stḗrEvery word from Proto-Hellenic astḗr