Where does “świetlówka” come from?
świetlówka (Polish) comes 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.
świetlówka (Polish): fluorescent lamp
Ancestry of “świetlówka”, step by step