Where does “czytelność” come from?
czytelność (Polish) comes from Polish czytelny, from Czech čitelný, from Czech číst, from Old Czech čísti, from Proto-Slavic *čistì, from Proto-Balto-Slavic (s)keistéi, from Proto-Indo-European *(s)kʷéyt-t ~ *(s)kit-ént, from Proto-Indo-European kʷeyt- — to notice; to read.
czytelność (Polish): readability
Ancestry of “czytelność”, step by step