Where does “cathaír” come from?

cathaír (Old Irish) comes from Latin cathēdra, from Ancient Greek καθέδρα, from Ancient Greek κατά, from Ancient Greek καταστερίζω, 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.

cathaír (Old Irish): chair

Definitions

  1. chair

Ancestry of “cathaír”, step by step

cathaír traces back through two separate lines of ancestry.

via Latin cathēdra

StepLanguageWordMeaning
1Latincathēdraarmchair (having cushions and supports)
2Ancient Greekκαθέδραseat; sitting posture; teacher's chair,...
3Ancient Greekκατά
4Ancient Greekκαταστερίζωto place among the stars; I put among the stars
5Ancient Greekἀστήρa celestial body; illustrious person; starfish
6Proto-Hellenicastḗrstar
7Proto-Indo-Europeanh₂stḗrstar
8Proto-Indo-Europeanh₂eHs-to be/become dry; to burn, to glow; hearth

via Proto-Celtic katrixs

StepLanguageWordMeaning
1Proto-Celtickatrixsfortification

Words derived from “cathaír

Every word from Proto-Indo-European h₂eHs-Every word from Proto-Indo-European h₂stḗrEvery word from Proto-Hellenic astḗr