Where does “policristalin” come from?

policristalin (Romanian) comes from Romanian cristalin, from French cristallin, from Latin crystallinus, from Ancient Greek κρυστάλλινος, from Ancient Greek κρύσταλλος, from Ancient Greek κρύος, from Proto-Indo-European krews- — to form a crust, begin to freeze.

policristalin (Romanian): polycrystalline

Definitions

polycrystalline

Ancestry of “policristalin”, step by step

Step	Language	Word	Meaning
1	Romanian	cristalin	crystalline
2	French	cristallin	crystalline; lens
3	Latin	crystallinus	crystal; resembling crystal; crystalline
4	Ancient Greek	κρυστάλλινος	icy; of crystal
5	Ancient Greek	κρύσταλλος	ice; rock crystal
6	Ancient Greek	κρύος	cold, chilliness; frost; ice
7	Proto-Indo-European	krews-	to form a crust, begin to freeze

Every word from Proto-Indo-European krews- →Every word from Ancient Greek κρύος →Every word from Ancient Greek κρύσταλλος →