Where does “strepto” come from?

strepto (English) comes from English Streptococcus, from Ancient Greek στρεπτός, from Ancient Greek στρέφω, from Proto-Indo-European strebʰ-.

Ancestry of “strepto”, step by step

Step	Language	Word	Meaning
1	English	Streptococcus	A spherical, gram-positive bacterium of the genus Streptococcus. Although commonly found benignly in the human mouth and gut, and though many species are non-pathogenic, other species can cause diseases including strep throat and more serious conditions
2	Ancient Greek	στρεπτός	Easily twisted, pliant
3	Ancient Greek	στρέφω	to twist
4	Proto-Indo-European	strebʰ-	—