algesia

The story

1. Ancient Greek · derived fromἄλγησις“sense of pain”
2. French · borrowed fromalgésie
3. English todayalgesia

From French algésie, either a back-formation from analgésie (“analgesia”) – the form *ἀλγησία (*algēsía) is not found in Ancient Greek – or formed directly from Ancient Greek ἄλγησις (álgēsis, “sense of pain”) + -ie (“-ia”).