Where does “periodus” come from?

periodus (Latin) comes from Ancient Greek περίοδος, from Ancient Greek ὁδός, from Proto-Hellenic *hodós.

periodus (Latin): a complete sentence; period; the circuit of the...

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	περίοδος	going round in a circle, flank march;...
2	Ancient Greek	ὁδός	threshold; road, path, way; journey, trip,...
3	Proto-Hellenic	*hodós	—

periodus — Etymology, Origin & Word History | Etymology Explorer