- epidural, extradural - on or outside the dura mater
- epidural anesthesia, epidural anaesthesia, epidural - regional anesthesia resulting from injection of an anesthetic into the epidural space of the spinal cord; sensation is lost in the abdominal and genital and pelvic areas; used in childbirth and gynecological surgery
--1 is a kind of regional anesthesia, regional anaesthesia