Where does “levan” come from?
levan (Friulian) comes from Latin levāmen, from Latin levō, from Latin lēvis, from Proto-Italic leɣʷis, from Proto-Indo-European h₁léngʰus, from Proto-Indo-European h₁lengʷʰ- — light.
levan (Friulian): yeast; leaven, leavening
Ancestry of “levan”, step by step