catamenia

The story

1. Ancient Greek · derived fromκαταμήνια
2. New Latin · derived fromcatamenia
3. English todaycatamenia

From New Latin catamenia, from Ancient Greek καταμήνια (katamḗnia), the neuter plural of καταμήνιος (katamḗnios, “monthly”), from κατά (katá) + μήν (mḗn, “month”). First attested in 1750.