Where does “Katar” come from?

Katar (Polish) comes from Latin catarrhus, from Ancient Greek κατάρροος, from Ancient Greek καταρρέω, from Ancient Greek κᾰτᾰ-, from Ancient Greek κατά, from Ancient Greek καταστερίζω, from Ancient Greek ἀστήρ, from Proto-Hellenic astḗr — to be/become dry; to burn, to glow; hearth.

Katar (Polish): catarrh, cold

Definitions

catarrh, cold

Ancestry of “Katar”, step by step

Katar traces back through 3 separate lines of ancestry.

via Latin catarrhus

Step	Language	Word	Meaning
1	Latin	catarrhus	catarrh, rheum
2	Ancient Greek	κατάρροος	catarrh, head cold
3	Ancient Greek	καταρρέω	flow down; stream, rush; drip
4	Ancient Greek	κᾰτᾰ-	fully; down; denoting motion downwards
5	Ancient Greek	κατά
6	Ancient Greek	καταστερίζω	to place among the stars; I put among the stars
7	Ancient Greek	ἀστήρ	a celestial body; illustrious person; starfish
8	Proto-Hellenic	astḗr	star
9	Proto-Indo-European	h₂stḗr	star
10	Proto-Indo-European	h₂eHs-	to be/become dry; to burn, to glow; hearth

via Medieval Latin Cathari

Step	Language	Word	Meaning
1	Medieval Latin	Cathari	the Pure
2	Ancient Greek	καθαρός	clean, clear, pure

via Arabic قَطَر

Step	Language	Word	Meaning
1	Arabic	قَطَر	Qatar

Words derived from “Katar”

Every word from Proto-Indo-European h₂eHs- →Every word from Proto-Indo-European h₂stḗr →Every word from Proto-Hellenic astḗr →