Where does “bieluchno” come from?

bieluchno (Polish) comes from Polish -o, from Polish -a, from Old Polish -ą, from Proto-Slavic -a, from Proto-Indo-European -ōd.

Ancestry of “bieluchno”, step by step

StepLanguageWordMeaning
1Polish-o-ly; ly
2Polish-aforms nominative feminine nouns
3Old Polish-ąforms third person plural of verbs
4Proto-Slavic-aid
5Proto-Indo-European-ōd—
Every word from Proto-Indo-European -ōd →Every word from Polish -o →Every word from Polish -a →