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.
4 â IV sedation Moderate, also known as Twilight anesthesia or Conscious sedation. This level of anesthesia includes amnesic drugs, which make the patient forget what happened during surgery. The patient is usually asleep, but able to breathe on his/her own.