In health Jurisprudence. (1) lack of sensation, or insensibility to discomfort, general or neighborhood, caused because of the management or application of specific medications including ether, nitrous oxide gas, or cocaine. (2) problem of feeling, or higher or less total insensibility to pain, existing in various areas of the body as a result of certair conditions associated with nervous system.
1721, "loss of sensation," Modern Latin, from Greek anaisthesia "want of feeling, not enough sensation (to pleasure or pain)," from an- "without" (see an- (1)) + aisthesis "feeling," from PIE root *au- "to view" (identify market). As "a procedure for the prevention of pain in surgical operations," from 1846.
losing actual sensation with or without loss in consciousness
- Entire or limited reduction or lack of feeling or sensation; a situation of general or regional insensibility created by condition or because of the breathing or application of an anaesthetic.
(letter.) whole or limited reduction or absence of experience or sensation; a state of basic or neighborhood insensibility from disease or because of the breathing or application of an anaesthetic.
Proposals have been made to employ hypnotism as a method of producing anaesthesia for surgical purposes, but there are two grave objections to such employment.