Where does “światełeczko” come from?

światełeczko (Polish) comes from Polish światełko, from Polish światło, from Old Polish światły, from Proto-Slavic světьlъ, from Proto-Slavic světъ, from Proto-Balto-Slavic śwaitas, from Proto-Indo-European ḱweyt- — to shine.

Ancestry of “światełeczko”, step by step

StepLanguageWordMeaning
1Polishświatełko—
2Polishświatłolight
3Old Polishświatły—
4Proto-Slavicsvětьlъbright
5Proto-Slavicsvětъlight; world
6Proto-Balto-Slavicśwaitas—
7Proto-Indo-Europeanḱweyt-to shine
Every word from Proto-Indo-European ḱweyt- →Every word from Proto-Balto-Slavic śwaitas →Every word from Proto-Slavic světъ →