anaesthesia or US noun
loss of the feeling of pain
epidural anaesthesia = local anaesthesia (used in childbirth) in which anaesthetic is injected into the space between the vertebral canal and the dura mater
general anaesthesia = loss of feeling and loss of consciousness
local anaesthesia = loss of feeling in a certain part of the body
spinal anaesthesia = local anaesthesia in which an anaesthetic is injected into the cerebrospinal fluid