/ˌepiˈd(y)o͝orəl/
Adjective
1. On or around the dura mater, in particular, (of an anesthetic) introduced into the space around the dura mater of the spinal cord. (Google Dictionary)
2. A simplified and all-inclusive term often used to refer to techniques such as epidural analgesia and epidural anaesthesia. (wikipedia.org)
3. Situated on or outside the dura mater. (wiktionary.org)
4. Situated within the spinal canal, on or outside the dura mater (tough membrane surrounding the spinal cord).
5. On or outside the dura mater. (wordnetweb.princeton.edu)
Noun, pl. epidurals
1. An epidural anesthetic, used esp. in childbirth to produce loss of sensation below the waist. (Google Dictionary)
2. 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. (wordnetweb.princeton.edu)
Syn: Extradural and peridural.
Word origin: From Ancient Greek ἐπί, “on, upon” + dura mater