adjective, sourer, sourest. 1. having an acid taste, resembling that of vinegar, lemon juice, etc.; tart. 2. rendered acid or affected by fermentation; fermented. 3. producing the one of the four basic taste sensations that is not bitter, salt, or sweet. 4. characteristic of something fermented: a sour smell.
General anesthetics normally are used to produce loss of consciousness before and during surgery. However, for obstetrics (labor and delivery) or certain minor procedures, an anesthetic may be given in small amounts to relieve anxiety or pain without causing unconsciousness.
Anesthesia problems are at least of two general types. One is acute effects on the brain, in particular, that occur during the operation when the amount of drugs in the body is high. The other is chronic effects from drug residues that remain in the body for years. Antibiotics are another very toxic class of drugs that are used liberally after many types of surgery.