Where does “lichenologie” come from?

lichenologie (Romanian) comes from French lichénologie, from French lichen, from Latin līchēn, from Ancient Greek λειχήν, from Ancient Greek λείχω, from Proto-Indo-European leyǵʰ- — to lick.

lichenologie (Romanian): lichenology

Definitions

lichenology

Ancestry of “lichenologie”, step by step

Step	Language	Word	Meaning
1	French	lichénologie	lichenology
2	French	lichen	lichen
3	Latin	līchēn	a cryptogamic species of vegetation growing on trees, lichen
4	Ancient Greek	λειχήν	Liverwort; Lichen-like disease affecting the skin...
5	Ancient Greek	λείχω	to lick up
6	Proto-Indo-European	leyǵʰ-	to lick

Every word from Proto-Indo-European leyǵʰ- →Every word from Ancient Greek λείχω →Every word from Ancient Greek λειχήν →