Where does “taenia” come from?

taenia (Latin) comes from Ancient Greek ταινία, from Proto-Indo-European ten- — to stretch, to extend.

Ancestry of “taenia”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ταινία	band, fillet, headband worn in sign of victory;...
2	Proto-Indo-European	ten-	to stretch, to extend