Where does “Kolodij” come from?

Kolodij (English) comes from Ukrainian Колодій, from Ancient Greek κολλώδης, from Ancient Greek κόλλα, from Proto-Indo-European ḱol-, from Proto-Indo-European ḱel- — to cover; to incline.

Ancestry of “Kolodij”, step by step

Step	Language	Word	Meaning
1	Ukrainian	Колодій	collodion
2	Ancient Greek	κολλώδης	—
3	Ancient Greek	κόλλα	glue; flour paste
4	Proto-Indo-European	ḱol-	thorn, thorny plant
5	Proto-Indo-European	ḱel-	to cover; to incline

Every word from Proto-Indo-European ḱel- →Every word from Proto-Indo-European ḱol- →Every word from Ancient Greek κόλλα →